Java cleanup, remove unnecessary casts

Change-Id: Id12089bc7df16631737e6acaee0973fb91dd953f
Reviewed-on: https://gerrit.libreoffice.org/3431
Reviewed-by: Fridrich Strba <fridrich@documentfoundation.org>
Tested-by: Fridrich Strba <fridrich@documentfoundation.org>

48 files changed, 373 insertions, 379 deletions

diff --git a/bridges/test/java_uno/acquire/TestAcquire.java b/bridges/test/java_uno/acquire/TestAcquire.java
index 33d3605e1827..0aa2b0f639e7 100644
--- a/bridges/test/java_uno/acquire/TestAcquire.java
+++ b/bridges/test/java_uno/acquire/TestAcquire.java
@@ -65,17 +65,17 @@ public final class TestAcquire {
         WaitUnreachable u;
 
         u = new WaitUnreachable(new XInterface() {});
-        test.setInterfaceToInterface((XInterface) u.get());
+        test.setInterfaceToInterface(u.get());
         receive(test.getInterfaceFromInterface());
         test.clearInterface();
         u.waitUnreachable();
         u = new WaitUnreachable(new XBase() {});
-        test.setInterfaceToInterface((XBase) u.get());
+        test.setInterfaceToInterface(u.get());
         receive(test.getInterfaceFromInterface());
         test.clearInterface();
         u.waitUnreachable();
         u = new WaitUnreachable(new XDerived() {});
-        test.setInterfaceToInterface((XDerived) u.get());
+        test.setInterfaceToInterface(u.get());
         receive(test.getInterfaceFromInterface());
         test.clearInterface();
         u.waitUnreachable();
@@ -126,13 +126,13 @@ public final class TestAcquire {
         u.waitUnreachable();
 
         u = new WaitUnreachable(new XInterface() {});
-        receive(test.roundTripInterfaceToInterface((XInterface) u.get()));
+        receive(test.roundTripInterfaceToInterface(u.get()));
         u.waitUnreachable();
         u = new WaitUnreachable(new XBase() {});
-        receive(test.roundTripInterfaceToInterface((XBase) u.get()));
+        receive(test.roundTripInterfaceToInterface(u.get()));
         u.waitUnreachable();
         u = new WaitUnreachable(new XDerived() {});
-        receive(test.roundTripInterfaceToInterface((XDerived) u.get()));
+        receive(test.roundTripInterfaceToInterface(u.get()));
         u.waitUnreachable();
 
         u = new WaitUnreachable(new XBase() {});
diff --git a/bridges/test/testclient.java b/bridges/test/testclient.java
index 135030c5fa80..e52b70385845 100644
--- a/bridges/test/testclient.java
+++ b/bridges/test/testclient.java
@@ -117,7 +117,7 @@ public class testclient
                 {
                     System.out.println( "after connect" );
                     String rootOid = "OfficeDaemon.Factory";
-                    com.sun.star.uno.IBridge bridge = (IBridge ) UnoRuntime.getBridgeByName(
+                    com.sun.star.uno.IBridge bridge = UnoRuntime.getBridgeByName(
                         "java",
                         null,
                         "remote",
diff --git a/chart2/qa/TestCaseOldAPI.java b/chart2/qa/TestCaseOldAPI.java
index 5792f52483c3..be1f911be55b 100644
--- a/chart2/qa/TestCaseOldAPI.java
+++ b/chart2/qa/TestCaseOldAPI.java
@@ -113,7 +113,7 @@ public class TestCaseOldAPI extends ComplexTestCase {
         else
             mxChartModel = createChartModel();
 
-        mxOldDoc = (XChartDocument) UnoRuntime.queryInterface(
+        mxOldDoc = UnoRuntime.queryInterface(
             XChartDocument.class, mxChartModel );
     }
 
@@ -121,7 +121,7 @@ public class TestCaseOldAPI extends ComplexTestCase {
 
     public void after()
     {
-        XCloseable xCloseable = (XCloseable) UnoRuntime.queryInterface(
+        XCloseable xCloseable = UnoRuntime.queryInterface(
             XCloseable.class, mxChartModel );
         assure( "document is no XCloseable", xCloseable != null );
 
@@ -146,7 +146,7 @@ public class TestCaseOldAPI extends ComplexTestCase {
     {
         try
         {
-            XPropertySet xDocProp = (XPropertySet) UnoRuntime.queryInterface(
+            XPropertySet xDocProp = UnoRuntime.queryInterface(
                 XPropertySet.class, mxOldDoc );
             assure( "Chart Document is no XPropertySet", xDocProp != null );
             xDocProp.setPropertyValue( "HasMainTitle", new Boolean( true ));
@@ -154,7 +154,7 @@ public class TestCaseOldAPI extends ComplexTestCase {
                         xDocProp.getPropertyValue( "HasMainTitle" )));
 
             XShape xTitleShape = mxOldDoc.getTitle();
-            XPropertySet xTitleProp = (XPropertySet) UnoRuntime.queryInterface(
+            XPropertySet xTitleProp = UnoRuntime.queryInterface(
                 XPropertySet.class, xTitleShape );
 
             // set property via old API
@@ -196,7 +196,7 @@ public class TestCaseOldAPI extends ComplexTestCase {
     {
         try
         {
-            XPropertySet xDocProp = (XPropertySet) UnoRuntime.queryInterface(
+            XPropertySet xDocProp = UnoRuntime.queryInterface(
                 XPropertySet.class, mxOldDoc );
             assure( "Chart Document is no XPropertySet", xDocProp != null );
             xDocProp.setPropertyValue( "HasSubTitle", new Boolean( true ));
@@ -204,7 +204,7 @@ public class TestCaseOldAPI extends ComplexTestCase {
                         xDocProp.getPropertyValue( "HasSubTitle" )));
 
             XShape xTitleShape = mxOldDoc.getSubTitle();
-            XPropertySet xTitleProp = (XPropertySet) UnoRuntime.queryInterface(
+            XPropertySet xTitleProp = UnoRuntime.queryInterface(
                 XPropertySet.class, xTitleShape );
 
             // set Property via old API
@@ -245,7 +245,7 @@ public class TestCaseOldAPI extends ComplexTestCase {
             XDiagram xDia = mxOldDoc.getDiagram();
             if( xDia != null )
             {
-                X3DDisplay xDisp = (X3DDisplay) UnoRuntime.queryInterface(
+                X3DDisplay xDisp = UnoRuntime.queryInterface(
                     X3DDisplay.class, xDia );
                 assure( "X3DDisplay not supported", xDisp != null );
 
@@ -263,7 +263,7 @@ public class TestCaseOldAPI extends ComplexTestCase {
                             "com.sun.star.chart.BarDiagram" ));
 
                 // Diagram properties
-                xProp = (XPropertySet) UnoRuntime.queryInterface( XPropertySet.class, xDia );
+                xProp = UnoRuntime.queryInterface( XPropertySet.class, xDia );
                 assure( "Diagram is no property set", xProp != null );
 
                 // y-axis
@@ -295,7 +295,7 @@ public class TestCaseOldAPI extends ComplexTestCase {
                     xProp.getPropertyValue( "HasSecondaryYAxis" ));
                 assure( "Adding a second y-axis does not work", bNewSecYAxisValue == bSecondaryYAxis );
 
-                XTwoAxisYSupplier xSecYAxisSuppl = (XTwoAxisYSupplier) UnoRuntime.queryInterface(
+                XTwoAxisYSupplier xSecYAxisSuppl = UnoRuntime.queryInterface(
                     XTwoAxisYSupplier.class, xDia );
                 assure( "XTwoAxisYSupplier not implemented", xSecYAxisSuppl != null );
                 assure( "No second y-axis found", xSecYAxisSuppl.getSecondaryYAxis() != null );
@@ -303,7 +303,7 @@ public class TestCaseOldAPI extends ComplexTestCase {
 
             // move diagram
             {
-                XShape xDiagramShape = (XShape) UnoRuntime.queryInterface(
+                XShape xDiagramShape = UnoRuntime.queryInterface(
                     XShape.class, xDia );
 
                 Point aOldPos = xDiagramShape.getPosition();
@@ -323,7 +323,7 @@ public class TestCaseOldAPI extends ComplexTestCase {
 
             // size diagram
             {
-                XShape xDiagramShape = (XShape) UnoRuntime.queryInterface(
+                XShape xDiagramShape = UnoRuntime.queryInterface(
                     XShape.class, xDia );
 
                 Size aOldSize = xDiagramShape.getSize();
@@ -354,7 +354,7 @@ public class TestCaseOldAPI extends ComplexTestCase {
     {
         try
         {
-            XAxisYSupplier xYAxisSuppl = (XAxisYSupplier) UnoRuntime.queryInterface(
+            XAxisYSupplier xYAxisSuppl = UnoRuntime.queryInterface(
                 XAxisYSupplier.class, mxOldDoc.getDiagram() );
             assure( "Diagram is no y-axis supplier", xYAxisSuppl != null );
 
@@ -452,7 +452,7 @@ public class TestCaseOldAPI extends ComplexTestCase {
         XShape xLegend = mxOldDoc.getLegend();
         assure( "No Legend returned", xLegend != null );
 
-        XPropertySet xLegendProp = (XPropertySet) UnoRuntime.queryInterface(
+        XPropertySet xLegendProp = UnoRuntime.queryInterface(
             XPropertySet.class, xLegend );
         assure( "Legend is no property set", xLegendProp != null );
 
@@ -532,7 +532,7 @@ public class TestCaseOldAPI extends ComplexTestCase {
 
     public void testChartType()
     {
-        XMultiServiceFactory xFact = (XMultiServiceFactory) UnoRuntime.queryInterface(
+        XMultiServiceFactory xFact = UnoRuntime.queryInterface(
             XMultiServiceFactory.class, mxOldDoc );
         assure( "document is no factory", xFact != null );
 
@@ -553,13 +553,13 @@ public class TestCaseOldAPI extends ComplexTestCase {
 
             if( bServiceFound )
             {
-                XDiagram xDia = (XDiagram) UnoRuntime.queryInterface(
+                XDiagram xDia = UnoRuntime.queryInterface(
                     XDiagram.class, xFact.createInstance( aMyServiceName ));
                 assure( aMyServiceName + " could not be created", xDia != null );
 
                 mxOldDoc.setDiagram( xDia );
 
-                XPropertySet xDiaProp = (XPropertySet) UnoRuntime.queryInterface(
+                XPropertySet xDiaProp = UnoRuntime.queryInterface(
                     XPropertySet.class, xDia );
                 assure( "Diagram is no XPropertySet", xDiaProp != null );
 
@@ -599,11 +599,11 @@ public class TestCaseOldAPI extends ComplexTestCase {
     public void testAggregation()
     {
         // query to new type
-        XChartDocument xDiaProv = (XChartDocument) UnoRuntime.queryInterface(
+        XChartDocument xDiaProv = UnoRuntime.queryInterface(
             XChartDocument.class, mxOldDoc );
         assure( "query to new interface failed", xDiaProv != null );
 
-        com.sun.star.chart.XChartDocument xDoc = (com.sun.star.chart.XChartDocument) UnoRuntime.queryInterface(
+        com.sun.star.chart.XChartDocument xDoc = UnoRuntime.queryInterface(
             com.sun.star.chart.XChartDocument.class, xDiaProv );
         assure( "querying back to old interface failed", xDoc != null );
     }
@@ -616,7 +616,7 @@ public class TestCaseOldAPI extends ComplexTestCase {
         {
             XDiagram xDia = mxOldDoc.getDiagram();
             assure( "Invalid Diagram", xDia != null );
-            XMultiServiceFactory xFact = (XMultiServiceFactory) UnoRuntime.queryInterface(
+            XMultiServiceFactory xFact = UnoRuntime.queryInterface(
                 XMultiServiceFactory.class, mxOldDoc );
             assure( "document is no factory", xFact != null );
 
@@ -632,7 +632,7 @@ public class TestCaseOldAPI extends ComplexTestCase {
 
             // note: the FillGradient property is optional, however it was
             // supported in the old chart's API
-            XNameContainer xGradientTable = (XNameContainer) UnoRuntime.queryInterface(
+            XNameContainer xGradientTable = UnoRuntime.queryInterface(
                 XNameContainer.class,
                 xFact.createInstance( "com.sun.star.drawing.GradientTable" ));
             assure( "no gradient table", xGradientTable != null );
@@ -674,7 +674,7 @@ public class TestCaseOldAPI extends ComplexTestCase {
 
             // note: the FillHatch property is optional, however it was
             // supported in the old chart's API
-            XNameContainer xHatchTable = (XNameContainer) UnoRuntime.queryInterface(
+            XNameContainer xHatchTable = UnoRuntime.queryInterface(
                 XNameContainer.class,
                 xFact.createInstance( "com.sun.star.drawing.HatchTable" ));
             assure( "no hatch table", xHatchTable != null );
@@ -735,7 +735,7 @@ public class TestCaseOldAPI extends ComplexTestCase {
     {
         try
         {
-            XPropertySet xDiaProp = (XPropertySet) UnoRuntime.queryInterface(
+            XPropertySet xDiaProp = UnoRuntime.queryInterface(
                 XPropertySet.class, mxOldDoc.getDiagram() );
 
             ChartDataRowSource eNewSource = ChartDataRowSource.ROWS;
@@ -766,7 +766,7 @@ public class TestCaseOldAPI extends ComplexTestCase {
 
 
             XChartData xData = mxOldDoc.getData();
-            XChartDataArray xDataArray = (XChartDataArray) UnoRuntime.queryInterface(
+            XChartDataArray xDataArray = UnoRuntime.queryInterface(
                 XChartDataArray.class, xData );
             assure( "document has no XChartDataArray", xDataArray != null );
 
@@ -791,18 +791,18 @@ public class TestCaseOldAPI extends ComplexTestCase {
         {
             setStockData_Type4();
 
-            XMultiServiceFactory xFact = (XMultiServiceFactory) UnoRuntime.queryInterface(
+            XMultiServiceFactory xFact = UnoRuntime.queryInterface(
                 XMultiServiceFactory.class, mxOldDoc );
             assure( "document is no factory", xFact != null );
 
             String aMyServiceName = new String( "com.sun.star.chart.StockDiagram" );
-            XDiagram xDia = (XDiagram) UnoRuntime.queryInterface(
+            XDiagram xDia = UnoRuntime.queryInterface(
                 XDiagram.class, xFact.createInstance( aMyServiceName ));
             assure( aMyServiceName + " could not be created", xDia != null );
 
             mxOldDoc.setDiagram( xDia );
 
-            XPropertySet xDiaProp = (XPropertySet) UnoRuntime.queryInterface(
+            XPropertySet xDiaProp = UnoRuntime.queryInterface(
                 XPropertySet.class, xDia );
             assure( "Diagram is no XPropertySet", xDiaProp != null );
 
@@ -813,7 +813,7 @@ public class TestCaseOldAPI extends ComplexTestCase {
             assure( "Has UpDown", AnyConverter.toBoolean( xDiaProp.getPropertyValue( "UpDown" )));
 
             // MinMaxLine
-            XStatisticDisplay xMinMaxProvider = (XStatisticDisplay) UnoRuntime.queryInterface(
+            XStatisticDisplay xMinMaxProvider = UnoRuntime.queryInterface(
                 XStatisticDisplay.class, xDia );
             assure( "Diagram is no XStatisticDisplay", xMinMaxProvider != null );
             XPropertySet xMinMaxProp = xMinMaxProvider.getMinMaxLine();
@@ -837,7 +837,7 @@ public class TestCaseOldAPI extends ComplexTestCase {
     {
         try
         {
-            XMultiServiceFactory xFact = (XMultiServiceFactory) UnoRuntime.queryInterface(
+            XMultiServiceFactory xFact = UnoRuntime.queryInterface(
                 XMultiServiceFactory.class, mxOldDoc );
             assure( "document is no factory", xFact != null );
 
@@ -873,7 +873,7 @@ public class TestCaseOldAPI extends ComplexTestCase {
                 "First Row", "Second Row", "Third Row"
             };
 
-            XPropertySet xDiaProp = (XPropertySet) UnoRuntime.queryInterface(
+            XPropertySet xDiaProp = UnoRuntime.queryInterface(
                     XPropertySet.class, mxOldDoc.getDiagram() );
             ChartDataRowSource eNewSource = ChartDataRowSource.ROWS;
             xDiaProp.setPropertyValue( "DataRowSource", eNewSource );
@@ -883,7 +883,7 @@ public class TestCaseOldAPI extends ComplexTestCase {
                         xDiaProp.getPropertyValue( "DataRowSource" )) == eNewSource );
 
             XChartData xData = mxOldDoc.getData();
-            XChartDataArray xDataArray = (XChartDataArray) UnoRuntime.queryInterface(
+            XChartDataArray xDataArray = UnoRuntime.queryInterface(
                 XChartDataArray.class, xData );
             assure( "document has no XChartDataArray", xDataArray != null );
 
@@ -900,7 +900,7 @@ public class TestCaseOldAPI extends ComplexTestCase {
 
             // refetch data
             xData = mxOldDoc.getData();
-            xDataArray = (XChartDataArray) UnoRuntime.queryInterface(
+            xDataArray = UnoRuntime.queryInterface(
                 XChartDataArray.class, xData );
             assure( "document has no XChartDataArray", xDataArray != null );
 
@@ -945,11 +945,11 @@ public class TestCaseOldAPI extends ComplexTestCase {
         XModel aResult = null;
         try
         {
-            XComponentLoader aLoader = (XComponentLoader) UnoRuntime.queryInterface(
+            XComponentLoader aLoader = UnoRuntime.queryInterface(
                 XComponentLoader.class,
                 ((XMultiServiceFactory)param.getMSF()).createInstance( "com.sun.star.frame.Desktop" ) );
 
-            aResult = (XModel) UnoRuntime.queryInterface(
+            aResult = UnoRuntime.queryInterface(
                 XModel.class,
                 aLoader.loadComponentFromURL( "private:factory/" + sDocType,
                                               "_blank",
@@ -972,7 +972,7 @@ public class TestCaseOldAPI extends ComplexTestCase {
         XModel aResult = null;
         try
         {
-            aResult = (XModel) UnoRuntime.queryInterface(
+            aResult = UnoRuntime.queryInterface(
                 XModel.class,
                 ((XMultiServiceFactory)param.getMSF()).createInstance( "com.sun.star.comp.chart2.ChartModel" ) );
         }
@@ -991,7 +991,7 @@ public class TestCaseOldAPI extends ComplexTestCase {
     {
         XComponentContext xResult = null;
 
-        XPropertySet xProp = (XPropertySet) UnoRuntime.queryInterface(
+        XPropertySet xProp = UnoRuntime.queryInterface(
             XPropertySet.class, xFact );
         if( xProp != null )
             try
diff --git a/connectivity/com/sun/star/sdbcx/comp/hsqldb/StorageAccess.java b/connectivity/com/sun/star/sdbcx/comp/hsqldb/StorageAccess.java
index 13afecfb9746..20a341201ca3 100644
--- a/connectivity/com/sun/star/sdbcx/comp/hsqldb/StorageAccess.java
+++ b/connectivity/com/sun/star/sdbcx/comp/hsqldb/StorageAccess.java
@@ -97,6 +97,7 @@ public class StorageAccess implements org.hsqldb.lib.Storage {
         return readonly;
     }
 
+    @SuppressWarnings("cast")
     public long readLong() throws java.io.IOException {
         return (((long) readInt()) << 32) + (((long) readInt()) & 0xFFFFFFFFL);
     }
diff --git a/dbaccess/qa/complex/dbaccess/PropertyBag.java b/dbaccess/qa/complex/dbaccess/PropertyBag.java
index 02389a783665..83bbee891d6c 100644
--- a/dbaccess/qa/complex/dbaccess/PropertyBag.java
+++ b/dbaccess/qa/complex/dbaccess/PropertyBag.java
@@ -294,7 +294,7 @@ public class PropertyBag extends TestCase
                 { "BoolValue", Boolean.TRUE },
                 { "StringValue", "" },
                 { "IntegerValue", Integer.valueOf( 3 ) },
-                { "InterfaceValue", (XInterface)m_bag }
+                { "InterfaceValue", m_bag }
             };
             for ( int i=0; i<properties.length; ++i )
             {
diff --git a/dbaccess/qa/complex/dbaccess/UISettings.java b/dbaccess/qa/complex/dbaccess/UISettings.java
index 14c7d32bad6b..2bac9c3bed33 100644
--- a/dbaccess/qa/complex/dbaccess/UISettings.java
+++ b/dbaccess/qa/complex/dbaccess/UISettings.java
@@ -78,9 +78,9 @@ public class UISettings extends TestCase
             tableViewController.getCurrentControl().getModel() );
 
         // verify the properties
-        assertEquals( "wrong font name", "Andale Sans UI", (String)tableControlModel.getPropertyValue( "FontName" ) );
-        assertEquals( "wrong font height", (float)20, ((Float)tableControlModel.getPropertyValue( "FontHeight" )).floatValue(), 0 );
-        assertEquals( "wrong font slant", FontSlant.ITALIC, (FontSlant)tableControlModel.getPropertyValue( "FontSlant" ) );
+        assertEquals( "wrong font name", "Andale Sans UI", tableControlModel.getPropertyValue( "FontName" ) );
+        assertEquals( "wrong font height", 20, ((Float)tableControlModel.getPropertyValue( "FontHeight" )).floatValue(), 0 );
+        assertEquals( "wrong font slant", FontSlant.ITALIC, tableControlModel.getPropertyValue( "FontSlant" ) );
 
         // close the doc
         database.saveAndClose();
diff --git a/desktop/test/deployment/options/handler/com/sun/star/comp/extensionoptions/OptionsEventHandler.java b/desktop/test/deployment/options/handler/com/sun/star/comp/extensionoptions/OptionsEventHandler.java
index 1f758dd9824a..2c420ab2a00d 100644
--- a/desktop/test/deployment/options/handler/com/sun/star/comp/extensionoptions/OptionsEventHandler.java
+++ b/desktop/test/deployment/options/handler/com/sun/star/comp/extensionoptions/OptionsEventHandler.java
@@ -89,7 +89,7 @@ public class OptionsEventHandler {
             //We get the com.sun.star.container.XNameAccess from the instance of
             //ConfigurationUpdateAccess and save it for later use.
             try {
-                m_xAccessLeaves = (XNameAccess) UnoRuntime.queryInterface(
+                m_xAccessLeaves = UnoRuntime.queryInterface(
                     XNameAccess.class, xConfig.createInstanceWithArguments(
                         "com.sun.star.configuration.ConfigurationUpdateAccess", args));
 
@@ -185,7 +185,7 @@ public class OptionsEventHandler {
 
             //To access the separate controls of the window we need to obtain the
             //XControlContainer from the window implementation
-            XControlContainer xContainer = (XControlContainer) UnoRuntime.queryInterface(
+            XControlContainer xContainer = UnoRuntime.queryInterface(
                 XControlContainer.class, aWindow);
             if (xContainer == null)
                 throw new com.sun.star.uno.Exception(
@@ -209,7 +209,7 @@ public class OptionsEventHandler {
                 //From the control we get the model, which in turn supports the
                 //XPropertySet interface, which we finally use to get the data from
                 //the control.
-                XPropertySet xProp = (XPropertySet) UnoRuntime.queryInterface(
+                XPropertySet xProp = UnoRuntime.queryInterface(
                     XPropertySet.class, xControl.getModel());
 
                 if (xProp == null)
@@ -235,7 +235,7 @@ public class OptionsEventHandler {
                 //com.sun.star.container.XNameAccess. The XNameAccess is used to get the
                 //particular registry node which represents this options page.
                 //Fortunately the name of the window is the same as the registry node.
-                XPropertySet xLeaf = (XPropertySet) UnoRuntime.queryInterface(
+                XPropertySet xLeaf = UnoRuntime.queryInterface(
                     XPropertySet.class, m_xAccessLeaves.getByName(sWindowName));
                 if (xLeaf == null)
                     throw new  com.sun.star.uno.Exception(
@@ -247,7 +247,7 @@ public class OptionsEventHandler {
 
             //Committing the changes will cause or changes to be written to the registry.
             XChangesBatch xUpdateCommit =
-                (XChangesBatch) UnoRuntime.queryInterface(XChangesBatch.class, m_xAccessLeaves);
+                UnoRuntime.queryInterface(XChangesBatch.class, m_xAccessLeaves);
             xUpdateCommit.commitChanges();
         }
 
@@ -264,7 +264,7 @@ public class OptionsEventHandler {
 
             //To acces the separate controls of the window we need to obtain the
             //XControlContainer from window implementation
-            XControlContainer xContainer = (XControlContainer) UnoRuntime.queryInterface(
+            XControlContainer xContainer = UnoRuntime.queryInterface(
                 XControlContainer.class, aWindow);
             if (xContainer == null)
                 throw new com.sun.star.uno.Exception(
@@ -280,7 +280,7 @@ public class OptionsEventHandler {
                 //of com.sun.star.configuration.ConfigurationUpdateAccess which supports
                 //com.sun.star.container.XNameAccess. We obtain now the section
                 //of the registry which is assigned to this options page.
-                XPropertySet xLeaf = (XPropertySet) UnoRuntime.queryInterface(
+                XPropertySet xLeaf = UnoRuntime.queryInterface(
                     XPropertySet.class, m_xAccessLeaves.getByName(sWindowName));
                 if (xLeaf == null)
                     throw new  com.sun.star.uno.Exception(
@@ -304,7 +304,7 @@ public class OptionsEventHandler {
                 //From the control we get the model, which in turn supports the
                 //XPropertySet interface, which we finally use to set the data at the
                 //control
-                XPropertySet xProp = (XPropertySet) UnoRuntime.queryInterface(
+                XPropertySet xProp = UnoRuntime.queryInterface(
                     XPropertySet.class, xControl.getModel());
 
                 if (xProp == null)
@@ -329,7 +329,7 @@ public class OptionsEventHandler {
 
             //We need to get the control model of the window. Therefore the first step is
             //to query for it.
-            XControl xControlDlg = (XControl) UnoRuntime.queryInterface(
+            XControl xControlDlg = UnoRuntime.queryInterface(
                 XControl.class, aWindow);
 
             if (xControlDlg == null)
@@ -343,7 +343,7 @@ public class OptionsEventHandler {
                     "Cannot obtain XControlModel from XWindow in method external_event.", this);
             //The model itself does not provide any information except that its
             //implementation supports XPropertySet which is used to access the data.
-            XPropertySet xPropDlg = (XPropertySet) UnoRuntime.queryInterface(
+            XPropertySet xPropDlg = UnoRuntime.queryInterface(
                 XPropertySet.class, xModelDlg);
             if (xPropDlg == null)
                 throw new com.sun.star.uno.Exception(
diff --git a/extensions/qa/integration/extensions/ConsoleWait.java b/extensions/qa/integration/extensions/ConsoleWait.java
index 5a46f3899ebf..454bd535c635 100644
--- a/extensions/qa/integration/extensions/ConsoleWait.java
+++ b/extensions/qa/integration/extensions/ConsoleWait.java
@@ -75,7 +75,7 @@ public class ConsoleWait implements com.sun.star.lang.XEventListener
     public ConsoleWait( Object _disposable )
     {
         m_disposable = _disposable;
-        XComponent component = (XComponent)UnoRuntime.queryInterface( XComponent.class, _disposable );
+        XComponent component = UnoRuntime.queryInterface( XComponent.class, _disposable );
         if ( component != null )
             component.addEventListener( this );
     }
diff --git a/extensions/qa/integration/extensions/Frame.java b/extensions/qa/integration/extensions/Frame.java
index a3c7b3e0d74e..098ffea82798 100644
--- a/extensions/qa/integration/extensions/Frame.java
+++ b/extensions/qa/integration/extensions/Frame.java
@@ -45,12 +45,12 @@ public class Frame implements   XFrame,
     {
         if ( _frameComponent != null )
         {
-            m_frame = (XFrame)UnoRuntime.queryInterface( XFrame.class, _frameComponent );
-            m_dispatchProvider = (XDispatchProvider)UnoRuntime.queryInterface( XDispatchProvider.class, _frameComponent );
-            m_dispatchProviderInterception = (XDispatchProviderInterception)UnoRuntime.queryInterface( XDispatchProviderInterception.class, _frameComponent );
-            m_framesSupplier = (XFramesSupplier)UnoRuntime.queryInterface( XFramesSupplier.class, _frameComponent );
-            m_statusIndicatorFactory = (XStatusIndicatorFactory)UnoRuntime.queryInterface( XStatusIndicatorFactory.class, _frameComponent );
-            m_closeable = (XCloseable)UnoRuntime.queryInterface( XCloseable.class, _frameComponent );
+            m_frame = UnoRuntime.queryInterface( XFrame.class, _frameComponent );
+            m_dispatchProvider = UnoRuntime.queryInterface( XDispatchProvider.class, _frameComponent );
+            m_dispatchProviderInterception = UnoRuntime.queryInterface( XDispatchProviderInterception.class, _frameComponent );
+            m_framesSupplier = UnoRuntime.queryInterface( XFramesSupplier.class, _frameComponent );
+            m_statusIndicatorFactory = UnoRuntime.queryInterface( XStatusIndicatorFactory.class, _frameComponent );
+            m_closeable = UnoRuntime.queryInterface( XCloseable.class, _frameComponent );
         }
     }
 
diff --git a/extensions/qa/integration/extensions/MethodHandler.java b/extensions/qa/integration/extensions/MethodHandler.java
index 93c9ec8fbc7a..8508dca8fbda 100644
--- a/extensions/qa/integration/extensions/MethodHandler.java
+++ b/extensions/qa/integration/extensions/MethodHandler.java
@@ -41,7 +41,7 @@ public class MethodHandler implements XPropertyHandler
 
         try
         {
-            m_introspection = (XIntrospection)UnoRuntime.queryInterface( XIntrospection.class,
+            m_introspection = UnoRuntime.queryInterface( XIntrospection.class,
                 m_context.getServiceManager().createInstanceWithContext( "com.sun.star.beans.Introspection", m_context )
             );
         }
@@ -92,7 +92,7 @@ public class MethodHandler implements XPropertyHandler
         descriptor.IndentLevel = 0;
         try
         {
-            XPropertyControl control = (XPropertyControl)UnoRuntime.queryInterface(
+            XPropertyControl control = UnoRuntime.queryInterface(
                     XPropertyControl.class, _propertyControlFactory.createPropertyControl(
                     PropertyControlType.TextField, true ) );
 
diff --git a/extensions/qa/integration/extensions/ObjectInspector.java b/extensions/qa/integration/extensions/ObjectInspector.java
index d42ef161015e..44f370e45562 100644
--- a/extensions/qa/integration/extensions/ObjectInspector.java
+++ b/extensions/qa/integration/extensions/ObjectInspector.java
@@ -59,8 +59,8 @@ public class ObjectInspector extends complexlib.ComplexTestCase
     public void before() throws com.sun.star.uno.Exception, java.lang.Exception
     {
         m_orb = (XMultiServiceFactory)param.getMSF();
-        m_context = (XComponentContext)UnoRuntime.queryInterface( XComponentContext.class,
-                ((XPropertySet)UnoRuntime.queryInterface( XPropertySet.class, m_orb )).getPropertyValue( "DefaultContext" ) );
+        m_context = UnoRuntime.queryInterface( XComponentContext.class,
+                UnoRuntime.queryInterface( XPropertySet.class, m_orb ).getPropertyValue( "DefaultContext" ) );
         m_desktop = new Frame( m_orb.createInstance( "com.sun.star.frame.Desktop" ) );
     }
 
@@ -145,7 +145,7 @@ public class ObjectInspector extends complexlib.ComplexTestCase
     /* ------------------------------------------------------------------ */
     private com.sun.star.awt.XWindow createFloatingWindow() throws com.sun.star.uno.Exception
     {
-        com.sun.star.awt.XToolkit toolkit = (com.sun.star.awt.XToolkit)UnoRuntime.queryInterface(
+        com.sun.star.awt.XToolkit toolkit = UnoRuntime.queryInterface(
                 com.sun.star.awt.XToolkit.class, m_orb.createInstance( "com.sun.star.awt.Toolkit" ) );
 
         com.sun.star.awt.WindowDescriptor windowDescriptor = new com.sun.star.awt.WindowDescriptor();
@@ -161,7 +161,7 @@ public class ObjectInspector extends complexlib.ComplexTestCase
                                             +   com.sun.star.awt.WindowAttribute.CLOSEABLE
                                             +   com.sun.star.awt.VclWindowPeerAttribute.CLIPCHILDREN;
 
-    return (com.sun.star.awt.XWindow)UnoRuntime.queryInterface( com.sun.star.awt.XWindow.class,
+    return UnoRuntime.queryInterface( com.sun.star.awt.XWindow.class,
                 toolkit.createWindow( windowDescriptor ) );
     }
 }
diff --git a/extensions/qa/integration/extensions/ServicesHandler.java b/extensions/qa/integration/extensions/ServicesHandler.java
index 6033b11c2277..87ebb270ae84 100644
--- a/extensions/qa/integration/extensions/ServicesHandler.java
+++ b/extensions/qa/integration/extensions/ServicesHandler.java
@@ -56,7 +56,7 @@ public class ServicesHandler implements XPropertyHandler
                 // the OpenHyperlink command, to be dispatched to the Desktop
                 com.sun.star.util.URL dispatchURL[] = { new com.sun.star.util.URL() };
                 dispatchURL[0].Complete = ".uno:OpenHyperlink";
-                com.sun.star.util.XURLTransformer transformer = (com.sun.star.util.XURLTransformer)UnoRuntime.queryInterface(
+                com.sun.star.util.XURLTransformer transformer = UnoRuntime.queryInterface(
                         com.sun.star.util.XURLTransformer.class,
                         m_context.getServiceManager().createInstanceWithContext( "com.sun.star.util.URLTransformer", m_context ) );
                 transformer.parseStrict( dispatchURL );
@@ -123,7 +123,7 @@ public class ServicesHandler implements XPropertyHandler
         descriptor.IndentLevel = 0;
         try
         {
-            XHyperlinkControl hyperlinkControl = (XHyperlinkControl)UnoRuntime.queryInterface(
+            XHyperlinkControl hyperlinkControl = UnoRuntime.queryInterface(
                     XHyperlinkControl.class, _propertyControlFactory.createPropertyControl( PropertyControlType.HyperlinkField, true ) );
             hyperlinkControl.addActionListener( new ClickHandler( m_context,  _propertyName ) );
 
@@ -174,7 +174,7 @@ public class ServicesHandler implements XPropertyHandler
 
     public void inspect(Object _component) throws com.sun.star.lang.NullPointerException
     {
-        XServiceInfo serviceInfo = (XServiceInfo)UnoRuntime.queryInterface( XServiceInfo.class, _component );
+        XServiceInfo serviceInfo = UnoRuntime.queryInterface( XServiceInfo.class, _component );
         if ( serviceInfo != null )
             m_supportedServices = serviceInfo.getSupportedServiceNames();
     }
diff --git a/extensions/test/pgp/TestPGP.java b/extensions/test/pgp/TestPGP.java
index 9559f1c18480..78d4285f707d 100644
--- a/extensions/test/pgp/TestPGP.java
+++ b/extensions/test/pgp/TestPGP.java
@@ -41,18 +41,18 @@ public class TestPGP {
 
 
     static void doSomething(Object r) throws com.sun.star.uno.Exception, IOException, Exception {
-        XNamingService rName = (XNamingService)UnoRuntime.queryInterface(XNamingService.class, r);
+        XNamingService rName = UnoRuntime.queryInterface(XNamingService.class, r);
 
         if(rName != null) {
             System.err.println("got the remote naming service !");
             Object rXsmgr = rName.getRegisteredObject("StarOffice.ServiceManager");
 
-            XMultiServiceFactory rSmgr = (XMultiServiceFactory)UnoRuntime.queryInterface(XMultiServiceFactory.class, rXsmgr);
+            XMultiServiceFactory rSmgr = UnoRuntime.queryInterface(XMultiServiceFactory.class, rXsmgr);
             if(rSmgr != null) {
                 System.err.println("got the remote service manager !");
             }
 
-            XSet set= (XSet)UnoRuntime.queryInterface(XSet.class, rSmgr);
+            XSet set= UnoRuntime.queryInterface(XSet.class, rSmgr);
             if( set == null) {
                 System.err.println(" couldn't get XSet from ServiceFactory");
                 return;
diff --git a/forms/qa/integration/forms/CellBinding.java b/forms/qa/integration/forms/CellBinding.java
index 7dc9408c011e..f7fcb3457df0 100644
--- a/forms/qa/integration/forms/CellBinding.java
+++ b/forms/qa/integration/forms/CellBinding.java
@@ -80,7 +80,7 @@ public class CellBinding extends complexlib.ComplexTestCase
             // close our document
             if ( m_document != null )
             {
-                XCloseable closeDoc = (XCloseable)UnoRuntime.queryInterface( XCloseable.class,
+                XCloseable closeDoc = UnoRuntime.queryInterface( XCloseable.class,
                     m_document.getDocument() );
                 closeDoc.close( true );
             }
@@ -385,7 +385,7 @@ public class CellBinding extends complexlib.ComplexTestCase
     */
     private boolean verifyVoidCell( short col, short row, String failErrorMessage ) throws com.sun.star.uno.Exception
     {
-        XCellRangeData cell = (XCellRangeData)UnoRuntime.queryInterface( XCellRangeData.class,
+        XCellRangeData cell = UnoRuntime.queryInterface( XCellRangeData.class,
             m_document.getSheet( 0 ).getCellByPosition( col, row )
         );
         Object cellContent = cell.getDataArray()[0][0];
@@ -402,7 +402,7 @@ public class CellBinding extends complexlib.ComplexTestCase
     */
     private boolean verifyNumericCellContent( short col, short row, double value, String failErrorMessage ) throws com.sun.star.uno.Exception
     {
-        XCell cell = (XCell)UnoRuntime.queryInterface( XCell.class,
+        XCell cell = UnoRuntime.queryInterface( XCell.class,
             m_document.getSheet( 0 ).getCellByPosition( col, row )
         );
         if ( cell.getValue() != value )
@@ -418,7 +418,7 @@ public class CellBinding extends complexlib.ComplexTestCase
     */
     private boolean verifyStringCellContent( short col, short row, String text, String failErrorMessage ) throws com.sun.star.uno.Exception
     {
-        XTextRange cell = (XTextRange)UnoRuntime.queryInterface( XTextRange.class,
+        XTextRange cell = UnoRuntime.queryInterface( XTextRange.class,
             m_document.getSheet( 0 ).getCellByPosition( col, row )
         );
         if ( !cell.getString().equals( text ) )
@@ -434,7 +434,7 @@ public class CellBinding extends complexlib.ComplexTestCase
     */
     private void setCellText( short col, short row, String text ) throws com.sun.star.uno.Exception
     {
-        XTextRange cell = (XTextRange)UnoRuntime.queryInterface( XTextRange.class,
+        XTextRange cell = UnoRuntime.queryInterface( XTextRange.class,
             m_document.getSheet( 0 ).getCellByPosition( col, row )
         );
         cell.setString( text );
@@ -445,7 +445,7 @@ public class CellBinding extends complexlib.ComplexTestCase
     */
     private void setCellValue( short col, short row, double value ) throws com.sun.star.uno.Exception
     {
-        XCell cell = (XCell)UnoRuntime.queryInterface( XCell.class,
+        XCell cell = UnoRuntime.queryInterface( XCell.class,
             m_document.getSheet( 0 ).getCellByPosition( col, row )
         );
         cell.setValue( value );
@@ -458,7 +458,7 @@ public class CellBinding extends complexlib.ComplexTestCase
     {
         // as long as #i29130# is not fixed, we do not set the cell to "empty", but to
         // an invalid formular, which serves well for our purpose
-        XCellRangeFormula cell = (XCellRangeFormula)UnoRuntime.queryInterface( XCellRangeFormula.class,
+        XCellRangeFormula cell = UnoRuntime.queryInterface( XCellRangeFormula.class,
             m_document.getSheet( 0 ).getCellByPosition( col, row )
         );
         String[][] args = new String[][] { new String[] { "=INVALID_FUNCTION()" } };
@@ -471,7 +471,7 @@ public class CellBinding extends complexlib.ComplexTestCase
      */
     private void bindToCell( XPropertySet controlModel, short column, short row, String _bindingServiceName ) throws com.sun.star.uno.Exception
     {
-        XBindableValue bindableModel = (XBindableValue)UnoRuntime.queryInterface( XBindableValue.class,
+        XBindableValue bindableModel = UnoRuntime.queryInterface( XBindableValue.class,
             controlModel
         );
 
@@ -484,7 +484,7 @@ public class CellBinding extends complexlib.ComplexTestCase
         parameters[0].Name = "BoundCell";
         parameters[0].Value = address;
 
-        XValueBinding cellBinding = (XValueBinding)UnoRuntime.queryInterface( XValueBinding.class,
+        XValueBinding cellBinding = UnoRuntime.queryInterface( XValueBinding.class,
             m_document.createInstanceWithArguments( _bindingServiceName, parameters )
         );
 
@@ -504,13 +504,13 @@ public class CellBinding extends complexlib.ComplexTestCase
     */
     private void setListSource( XPropertySet _listSink, short _sourceCol, short _rowStart, short _rowEnd ) throws com.sun.star.uno.Exception
     {
-        CellRangeAddress listSourceAddress = new CellRangeAddress( (short)0, (int)_sourceCol, (int)_rowStart, (int)_sourceCol, (int)_rowEnd );
+        CellRangeAddress listSourceAddress = new CellRangeAddress( (short)0, _sourceCol, _rowStart, _sourceCol, _rowEnd );
         NamedValue addressParameter = new NamedValue( "CellRange", listSourceAddress );
 
-        XListEntrySource listSource = (XListEntrySource)UnoRuntime.queryInterface( XListEntrySource.class,
+        XListEntrySource listSource = UnoRuntime.queryInterface( XListEntrySource.class,
             m_document.createInstanceWithArguments( "com.sun.star.table.CellRangeListSource", new NamedValue[]{ addressParameter } )
         );
-        XListEntrySink listSink = (XListEntrySink)UnoRuntime.queryInterface( XListEntrySink.class,
+        XListEntrySink listSink = UnoRuntime.queryInterface( XListEntrySink.class,
             _listSink );
         listSink.setListEntrySource( listSource );
     }
@@ -520,10 +520,10 @@ public class CellBinding extends complexlib.ComplexTestCase
     */
     private void simulateUserRadioCheck( XPropertySet radioModel ) throws com.sun.star.uno.Exception
     {
-        XAccessible accessible = (XAccessible)UnoRuntime.queryInterface(
+        XAccessible accessible = UnoRuntime.queryInterface(
             XAccessible.class, m_document.getCurrentView().getControl( radioModel ) );
 
-        XAccessibleValue xValue = (XAccessibleValue)UnoRuntime.queryInterface(
+        XAccessibleValue xValue = UnoRuntime.queryInterface(
             XAccessibleValue.class, accessible.getAccessibleContext() );
 
         Integer newValue = new Integer( 1 );
@@ -535,10 +535,10 @@ public class CellBinding extends complexlib.ComplexTestCase
     */
     private void simulateUserCheckBoxCheck( XPropertySet checkBox, short state ) throws com.sun.star.uno.Exception
     {
-        XAccessible accessible = (XAccessible)UnoRuntime.queryInterface(
+        XAccessible accessible = UnoRuntime.queryInterface(
             XAccessible.class, m_document.getCurrentView().getControl( checkBox ) );
 
-        XAccessibleValue xValue = (XAccessibleValue)UnoRuntime.queryInterface(
+        XAccessibleValue xValue = UnoRuntime.queryInterface(
             XAccessibleValue.class, accessible.getAccessibleContext() );
 
         xValue.setCurrentValue( new Short( state ) );
@@ -549,7 +549,7 @@ public class CellBinding extends complexlib.ComplexTestCase
     */
     private void simulateUserListBoxSelection( XPropertySet _listBox, String _selectEntry ) throws com.sun.star.uno.Exception
     {
-        XListBox listBoxControl = (XListBox)UnoRuntime.queryInterface(
+        XListBox listBoxControl = UnoRuntime.queryInterface(
             XListBox.class, m_document.getCurrentView().getControl( _listBox ) );
         listBoxControl.selectItem( _selectEntry, true );
     }
@@ -559,14 +559,14 @@ public class CellBinding extends complexlib.ComplexTestCase
     */
     private void simulateUserTextInput( XPropertySet controlModel, String text ) throws com.sun.star.uno.Exception
     {
-        XAccessible accessible = (XAccessible)UnoRuntime.queryInterface(
+        XAccessible accessible = UnoRuntime.queryInterface(
             XAccessible.class, m_document.getCurrentView().getControl( controlModel ) );
 
         XAccessibleContext context = accessible.getAccessibleContext();
-        XServiceInfo si = (XServiceInfo)UnoRuntime.queryInterface( XServiceInfo.class,
+        XServiceInfo si = UnoRuntime.queryInterface( XServiceInfo.class,
             accessible.getAccessibleContext() );
 
-        XAccessibleEditableText textAccess = (XAccessibleEditableText)UnoRuntime.queryInterface(
+        XAccessibleEditableText textAccess = UnoRuntime.queryInterface(
             XAccessibleEditableText.class, accessible.getAccessibleContext() );
 
         textAccess.setText( text );
diff --git a/forms/qa/integration/forms/ControlValidation.java b/forms/qa/integration/forms/ControlValidation.java
index 384238710d9a..55718f71adc1 100644
--- a/forms/qa/integration/forms/ControlValidation.java
+++ b/forms/qa/integration/forms/ControlValidation.java
@@ -87,7 +87,7 @@ public class ControlValidation extends complexlib.ComplexTestCase implements com
             // close our document
             if ( m_document != null )
             {
-                XCloseable closeDoc = (XCloseable)UnoRuntime.queryInterface( XCloseable.class,
+                XCloseable closeDoc = UnoRuntime.queryInterface( XCloseable.class,
                     m_document.getDocument() );
                 closeDoc.close( true );
             }
diff --git a/forms/qa/integration/forms/DocumentHelper.java b/forms/qa/integration/forms/DocumentHelper.java
index 1aeefb454207..a26434b1931c 100644
--- a/forms/qa/integration/forms/DocumentHelper.java
+++ b/forms/qa/integration/forms/DocumentHelper.java
@@ -67,7 +67,7 @@ public class DocumentHelper
     /* ------------------------------------------------------------------ */
     protected static XComponent implLoadAsComponent( XMultiServiceFactory orb, String documentOrFactoryURL, final PropertyValue[] i_args ) throws com.sun.star.uno.Exception
     {
-        XComponentLoader aLoader = (XComponentLoader)UnoRuntime.queryInterface(
+        XComponentLoader aLoader = UnoRuntime.queryInterface(
             XComponentLoader.class,
             orb.createInstance( "com.sun.star.frame.Desktop" )
         );
@@ -89,7 +89,7 @@ public class DocumentHelper
     {
         XComponent document = implLoadAsComponent( orb, documentOrFactoryURL, i_args );
 
-        XServiceInfo xSI = (XServiceInfo)UnoRuntime.queryInterface( XServiceInfo.class,
+        XServiceInfo xSI = UnoRuntime.queryInterface( XServiceInfo.class,
             document );
         if ( xSI.supportsService( "com.sun.star.sheet.SpreadsheetDocument" ) )
             return new SpreadsheetDocument( orb, document );
@@ -157,7 +157,7 @@ public class DocumentHelper
     public DocumentViewHelper getCurrentView( )
     {
         // get the model interface for the document
-        XModel xDocModel = (XModel)UnoRuntime.queryInterface(XModel.class, m_documentComponent );
+        XModel xDocModel = UnoRuntime.queryInterface(XModel.class, m_documentComponent );
         // get the current controller for the document - as a controller is tied to a view,
         // this gives us the currently active view for the document.
         XController xController = xDocModel.getCurrentController();
@@ -188,7 +188,7 @@ public class DocumentHelper
 
         getCurrentView().dispatch( ".uno:Reload" );
 
-        m_documentComponent = (XComponent)UnoRuntime.queryInterface( XComponent.class,
+        m_documentComponent = UnoRuntime.queryInterface( XComponent.class,
             frame.getController().getModel() );
 
         XModel newModel = getCurrentView().getController().getModel();
@@ -222,7 +222,7 @@ public class DocumentHelper
         }
 
         // outta here
-        return (XIndexContainer)UnoRuntime.queryInterface( XIndexContainer.class, xNewForm );
+        return UnoRuntime.queryInterface( XIndexContainer.class, xNewForm );
     }
 
     /* ------------------------------------------------------------------ */
@@ -237,7 +237,7 @@ public class DocumentHelper
     public XIndexContainer createSubForm( Object aParentContainer, String sInitialName )
         throws com.sun.star.uno.Exception
     {
-        XIndexContainer xParentContainer = (XIndexContainer)UnoRuntime.queryInterface(
+        XIndexContainer xParentContainer = UnoRuntime.queryInterface(
             XIndexContainer.class, aParentContainer );
         return createSubForm( xParentContainer, sInitialName );
     }
@@ -265,13 +265,13 @@ public class DocumentHelper
     */
     static public DocumentHelper getDocumentForComponent( Object aFormComponent, XMultiServiceFactory orb )
     {
-        XChild xChild = (XChild)UnoRuntime.queryInterface( XChild.class, aFormComponent );
+        XChild xChild = UnoRuntime.queryInterface( XChild.class, aFormComponent );
         XModel xModel = null;
         while ( ( null != xChild ) && ( null == xModel ) )
         {
             XInterface xParent = (XInterface)xChild.getParent();
-            xModel = (XModel)UnoRuntime.queryInterface( XModel.class, xParent );
-            xChild = (XChild)UnoRuntime.queryInterface( XChild.class, xParent );
+            xModel = UnoRuntime.queryInterface( XModel.class, xParent );
+            xChild = UnoRuntime.queryInterface( XChild.class, xParent );
         }
 
         return new DocumentHelper( orb, xModel );
@@ -298,7 +298,7 @@ public class DocumentHelper
     */
     public DocumentType classify( )
     {
-        XServiceInfo xSI = (XServiceInfo)UnoRuntime.queryInterface(
+        XServiceInfo xSI = UnoRuntime.queryInterface(
             XServiceInfo.class, m_documentComponent );
 
         if ( xSI.supportsService( "com.sun.star.text.TextDocument" ) )
@@ -321,11 +321,11 @@ public class DocumentHelper
      */
     protected XDrawPage getDrawPage( int index ) throws com.sun.star.lang.IndexOutOfBoundsException, com.sun.star.lang.WrappedTargetException
     {
-        XDrawPagesSupplier xSuppPages = (XDrawPagesSupplier)UnoRuntime.queryInterface(
+        XDrawPagesSupplier xSuppPages = UnoRuntime.queryInterface(
             XDrawPagesSupplier.class, getDocument() );
         XDrawPages xPages = xSuppPages.getDrawPages();
 
-        return (XDrawPage)UnoRuntime.queryInterface( XDrawPage.class, xPages.getByIndex( index ) );
+        return UnoRuntime.queryInterface( XDrawPage.class, xPages.getByIndex( index ) );
     }
 
     /* ------------------------------------------------------------------ */
@@ -336,18 +336,18 @@ public class DocumentHelper
         XDrawPage xReturn;
 
         // in case of a Writer document, this is rather easy: simply ask the XDrawPageSupplier
-        XDrawPageSupplier xSuppPage = (XDrawPageSupplier)UnoRuntime.queryInterface(
+        XDrawPageSupplier xSuppPage = UnoRuntime.queryInterface(
             XDrawPageSupplier.class, getDocument() );
         if ( null != xSuppPage )
             xReturn = xSuppPage.getDrawPage();
         else
         {   // the model itself is no draw page supplier - okay, it may be a Writer or Calc document
             // (or any other multi-page document)
-            XDrawPagesSupplier xSuppPages = (XDrawPagesSupplier)UnoRuntime.queryInterface(
+            XDrawPagesSupplier xSuppPages = UnoRuntime.queryInterface(
                 XDrawPagesSupplier.class, getDocument() );
             XDrawPages xPages = xSuppPages.getDrawPages();
 
-            xReturn = (XDrawPage)UnoRuntime.queryInterface( XDrawPage.class, xPages.getByIndex( 0 ) );
+            xReturn = UnoRuntime.queryInterface( XDrawPage.class, xPages.getByIndex( 0 ) );
 
             // Note that this is no really error-proof code: If the document model does not support the
             // XDrawPagesSupplier interface, or if the pages collection returned is empty, this will break.
@@ -361,7 +361,7 @@ public class DocumentHelper
     */
     protected XNameContainer getFormComponentTreeRoot( ) throws com.sun.star.uno.Exception
     {
-        XFormsSupplier xSuppForms = (XFormsSupplier)UnoRuntime.queryInterface(
+        XFormsSupplier xSuppForms = UnoRuntime.queryInterface(
             XFormsSupplier.class, getMainDrawPage( ) );
 
         XNameContainer xFormsCollection = null;
@@ -377,7 +377,7 @@ public class DocumentHelper
     */
     public XInterface createInstance( String serviceSpecifier ) throws com.sun.star.uno.Exception
     {
-        XMultiServiceFactory xORB = (XMultiServiceFactory)UnoRuntime.queryInterface( XMultiServiceFactory.class,
+        XMultiServiceFactory xORB = UnoRuntime.queryInterface( XMultiServiceFactory.class,
             m_documentComponent );
         return (XInterface)xORB.createInstance( serviceSpecifier );
     }
@@ -387,7 +387,7 @@ public class DocumentHelper
     */
     public XInterface createInstanceWithArguments( String serviceSpecifier, Object[] arguments ) throws com.sun.star.uno.Exception
     {
-        XMultiServiceFactory xORB = (XMultiServiceFactory)UnoRuntime.queryInterface( XMultiServiceFactory.class,
+        XMultiServiceFactory xORB = UnoRuntime.queryInterface( XMultiServiceFactory.class,
             m_documentComponent );
         return (XInterface) xORB.createInstanceWithArguments( serviceSpecifier, arguments );
     }
diff --git a/forms/qa/integration/forms/DocumentViewHelper.java b/forms/qa/integration/forms/DocumentViewHelper.java
index 9226afdc2e55..66d8f0bf667a 100644
--- a/forms/qa/integration/forms/DocumentViewHelper.java
+++ b/forms/qa/integration/forms/DocumentViewHelper.java
@@ -94,12 +94,12 @@ public class DocumentViewHelper
         // go get the current view
         XController xController = (XController)query( XController.class );
         // go get the dispatch provider of it's frame
-        XDispatchProvider xProvider = (XDispatchProvider)UnoRuntime.queryInterface(
+        XDispatchProvider xProvider = UnoRuntime.queryInterface(
             XDispatchProvider.class, xController.getFrame() );
         if ( null != xProvider )
         {
             // need an URLTransformer
-            XURLTransformer xTransformer = (XURLTransformer)UnoRuntime.queryInterface(
+            XURLTransformer xTransformer = UnoRuntime.queryInterface(
                     XURLTransformer.class, m_orb.createInstance( "com.sun.star.util.URLTransformer" ) );
             xTransformer.parseStrict( aURL );
 
@@ -155,14 +155,14 @@ public class DocumentViewHelper
     /* ------------------------------------------------------------------ */
     public XControl getControl( Object aModel ) throws com.sun.star.uno.Exception
     {
-        XControlModel xModel = (XControlModel)UnoRuntime.queryInterface( XControlModel.class, aModel );
+        XControlModel xModel = UnoRuntime.queryInterface( XControlModel.class, aModel );
         return getControl( xModel );
     }
 
     /* ------------------------------------------------------------------ */
     public Object getControl( Object aModel, Class aInterfaceClass ) throws com.sun.star.uno.Exception
     {
-        XControlModel xModel = (XControlModel)UnoRuntime.queryInterface( XControlModel.class, aModel );
+        XControlModel xModel = UnoRuntime.queryInterface( XControlModel.class, aModel );
         return UnoRuntime.queryInterface( aInterfaceClass, getControl( xModel ) );
     }
 
@@ -206,7 +206,7 @@ public class DocumentViewHelper
         XControl xControl = getControl( xModel );
 
         // the focus can be set to an XWindow only
-        XWindow xControlWindow = (XWindow)UnoRuntime.queryInterface( XWindow.class,
+        XWindow xControlWindow = UnoRuntime.queryInterface( XWindow.class,
             xControl );
 
         // grab the focus
@@ -229,7 +229,7 @@ public class DocumentViewHelper
             XPropertySet xControlProps = dbfTools.queryPropertySet( xForm.getByIndex( i ) );
             if ( FormComponentType.FIXEDTEXT != ((Short)xControlProps.getPropertyValue( "ClassId" )).shortValue() )
             {
-                XControlModel xControlModel = (XControlModel)UnoRuntime.queryInterface(
+                XControlModel xControlModel = UnoRuntime.queryInterface(
                     XControlModel.class, xControlProps );
                 // set the focus to this control
                 grabControlFocus( xControlModel );
diff --git a/forms/qa/integration/forms/FormComponent.java b/forms/qa/integration/forms/FormComponent.java
index 1b9cf212b869..f19ceea87b9d 100644
--- a/forms/qa/integration/forms/FormComponent.java
+++ b/forms/qa/integration/forms/FormComponent.java
@@ -47,16 +47,16 @@ public class FormComponent
     /* ------------------------------------------------------------------ */
     public FormComponent( XDrawPage drawPage )
     {
-        XFormsSupplier supp = (XFormsSupplier)UnoRuntime.queryInterface(
+        XFormsSupplier supp = UnoRuntime.queryInterface(
             XFormsSupplier.class, drawPage );
         m_component = supp.getForms();
 
         m_nameAccess = (XNameAccess)m_component;
-        m_indexAccess = (XIndexAccess)UnoRuntime.queryInterface(
+        m_indexAccess = UnoRuntime.queryInterface(
             XIndexAccess.class, m_component );
-        m_child = (XChild)UnoRuntime.queryInterface(
+        m_child = UnoRuntime.queryInterface(
             XChild.class, m_component );
-        m_named = (XNamed)UnoRuntime.queryInterface(
+        m_named = UnoRuntime.queryInterface(
             XNamed.class, m_component );
     }
 
@@ -64,13 +64,13 @@ public class FormComponent
     public FormComponent( Object element )
     {
         m_component = element;
-        m_nameAccess = (XNameAccess)UnoRuntime.queryInterface(
+        m_nameAccess = UnoRuntime.queryInterface(
             XNameAccess.class, m_component );
-        m_indexAccess = (XIndexAccess)UnoRuntime.queryInterface(
+        m_indexAccess = UnoRuntime.queryInterface(
             XIndexAccess.class, m_component );
-        m_child = (XChild)UnoRuntime.queryInterface(
+        m_child = UnoRuntime.queryInterface(
             XChild.class, m_component );
-        m_named = (XNamed)UnoRuntime.queryInterface(
+        m_named = UnoRuntime.queryInterface(
             XNamed.class, m_component );
     }
 
@@ -179,7 +179,7 @@ public class FormComponent
     /* ------------------------------------------------------------------ */
     public String getImplementationName()
     {
-        XServiceInfo si = (XServiceInfo)UnoRuntime.queryInterface(
+        XServiceInfo si = UnoRuntime.queryInterface(
             XServiceInfo.class, m_component );
         if ( si != null )
             return si.getImplementationName();
diff --git a/forms/qa/integration/forms/FormControlTest.java b/forms/qa/integration/forms/FormControlTest.java
index 488c3877a077..8d4ee1e84670 100644
--- a/forms/qa/integration/forms/FormControlTest.java
+++ b/forms/qa/integration/forms/FormControlTest.java
@@ -453,7 +453,7 @@ public class FormControlTest extends complexlib.ComplexTestCase implements XSQLE
         // close our document
         if ( m_document != null )
         {
-            XCloseable closeDoc = (XCloseable)UnoRuntime.queryInterface( XCloseable.class,
+            XCloseable closeDoc = UnoRuntime.queryInterface( XCloseable.class,
                 m_document.getDocument() );
             closeDoc.close( true );
         }
@@ -465,9 +465,9 @@ public class FormControlTest extends complexlib.ComplexTestCase implements XSQLE
     {
         m_orb = (XMultiServiceFactory)param.getMSF();
 
-        XNameAccess databaseContext = (XNameAccess)UnoRuntime.queryInterface( XNameAccess.class,
+        XNameAccess databaseContext = UnoRuntime.queryInterface( XNameAccess.class,
             m_orb.createInstance( "com.sun.star.sdb.DatabaseContext" ) );
-        XNamingService namingService = (XNamingService)UnoRuntime.queryInterface( XNamingService.class,
+        XNamingService namingService = UnoRuntime.queryInterface( XNamingService.class,
             databaseContext );
 
         // revoke the data source, if it previously existed
@@ -479,11 +479,11 @@ public class FormControlTest extends complexlib.ComplexTestCase implements XSQLE
         String documentURL = m_databaseDocument.getDocumentURL();
         namingService.registerObject( m_dataSourceName, databaseContext.getByName( documentURL ) );
 
-        m_dataSource = (XDataSource)UnoRuntime.queryInterface( XDataSource.class,
+        m_dataSource = UnoRuntime.queryInterface( XDataSource.class,
             databaseContext.getByName( m_dataSourceName ) );
         m_dataSourceProps = dbfTools.queryPropertySet( m_dataSource );
 
-        XPropertySet dataSourceSettings = (XPropertySet)UnoRuntime.queryInterface( XPropertySet.class,
+        XPropertySet dataSourceSettings = UnoRuntime.queryInterface( XPropertySet.class,
             m_dataSourceProps.getPropertyValue( "Settings" ) );
         dataSourceSettings.setPropertyValue( "FormsCheckRequiredFields", new Boolean( false ) );
 
@@ -495,9 +495,9 @@ public class FormControlTest extends complexlib.ComplexTestCase implements XSQLE
     */
     private XPropertySet getControlModel( String name ) throws com.sun.star.uno.Exception, java.lang.Exception
     {
-        XNameAccess nameAccess = (XNameAccess)UnoRuntime.queryInterface( XNameAccess.class,
+        XNameAccess nameAccess = UnoRuntime.queryInterface( XNameAccess.class,
             m_masterForm );
-        return (XPropertySet)UnoRuntime.queryInterface( XPropertySet.class,
+        return UnoRuntime.queryInterface( XPropertySet.class,
             nameAccess.getByName( name ) );
     }
 
@@ -547,7 +547,7 @@ public class FormControlTest extends complexlib.ComplexTestCase implements XSQLE
         m_document.getCurrentView( ).toggleFormDesignMode( );
 
         m_masterFormController = m_document.getCurrentView().getFormController( m_masterForm );
-        XSQLErrorBroadcaster errorBroadcaster = (XSQLErrorBroadcaster)UnoRuntime.queryInterface( XSQLErrorBroadcaster.class,
+        XSQLErrorBroadcaster errorBroadcaster = UnoRuntime.queryInterface( XSQLErrorBroadcaster.class,
             m_masterFormController );
         errorBroadcaster.addSQLErrorListener( this );
 
@@ -796,21 +796,21 @@ public class FormControlTest extends complexlib.ComplexTestCase implements XSQLE
     /* ------------------------------------------------------------------ */
     private void moveToInsertRow() throws com.sun.star.uno.Exception, java.lang.Exception
     {
-        XResultSetUpdate xResultSet = (XResultSetUpdate)UnoRuntime.queryInterface( XResultSetUpdate.class, m_masterForm );
+        XResultSetUpdate xResultSet = UnoRuntime.queryInterface( XResultSetUpdate.class, m_masterForm );
         xResultSet.moveToInsertRow( );
     }
 
     /* ------------------------------------------------------------------ */
     private void moveToFirst() throws com.sun.star.uno.Exception, java.lang.Exception
     {
-        XResultSet xResultSet = (XResultSet)UnoRuntime.queryInterface( XResultSet.class, m_masterForm );
+        XResultSet xResultSet = UnoRuntime.queryInterface( XResultSet.class, m_masterForm );
         xResultSet.first( );
     }
 
     /* ------------------------------------------------------------------ */
     private void moveToNext() throws com.sun.star.uno.Exception, java.lang.Exception
     {
-        XResultSet xResultSet = (XResultSet)UnoRuntime.queryInterface( XResultSet.class, m_masterForm );
+        XResultSet xResultSet = UnoRuntime.queryInterface( XResultSet.class, m_masterForm );
         xResultSet.next( );
     }
 
@@ -823,7 +823,7 @@ public class FormControlTest extends complexlib.ComplexTestCase implements XSQLE
 
         URL[] url = new URL[] { new URL() };
         url[0].Complete = slotURL;
-        XURLTransformer xTransformer = (XURLTransformer)UnoRuntime.queryInterface(
+        XURLTransformer xTransformer = UnoRuntime.queryInterface(
                 XURLTransformer.class, m_orb.createInstance( "com.sun.star.util.URLTransformer" ) );
         xTransformer.parseStrict( url );
 
@@ -913,7 +913,7 @@ public class FormControlTest extends complexlib.ComplexTestCase implements XSQLE
         XPropertySet xImageModel = getControlModel( "f_blob" );
 
         // check if the image control properly says that there currently is no image on the first record
-        XImageProducerSupplier xSuppProducer = (XImageProducerSupplier)UnoRuntime.queryInterface( XImageProducerSupplier.class,
+        XImageProducerSupplier xSuppProducer = UnoRuntime.queryInterface( XImageProducerSupplier.class,
             xImageModel );
         XImageProducer xProducer = xSuppProducer.getImageProducer();
 
diff --git a/forms/qa/integration/forms/FormLayer.java b/forms/qa/integration/forms/FormLayer.java
index 09ac58d637e0..080d6873e5fd 100644
--- a/forms/qa/integration/forms/FormLayer.java
+++ b/forms/qa/integration/forms/FormLayer.java
@@ -310,15 +310,15 @@ public class FormLayer
      */
     public XPropertySet getControlModel( int[] _accessPath ) throws com.sun.star.uno.Exception
     {
-        XIndexAccess indexAcc = (XIndexAccess)UnoRuntime.queryInterface( XIndexAccess.class,
+        XIndexAccess indexAcc = UnoRuntime.queryInterface( XIndexAccess.class,
             m_document.getFormComponentTreeRoot() );
         XPropertySet controlModel = null;
         int i=0;
         while ( ( indexAcc != null ) && ( i < _accessPath.length ) )
         {
-            controlModel = (XPropertySet)UnoRuntime.queryInterface( XPropertySet.class,
+            controlModel = UnoRuntime.queryInterface( XPropertySet.class,
                 indexAcc.getByIndex( _accessPath[i] ) );
-            indexAcc = (XIndexAccess)UnoRuntime.queryInterface( XIndexAccess.class,
+            indexAcc = UnoRuntime.queryInterface( XIndexAccess.class,
                 controlModel );
             ++i;
         }
@@ -335,9 +335,9 @@ public class FormLayer
         int i=0;
         while ( ( nameAcc != null ) && ( i < _accessPath.length ) )
         {
-            controlModel = (XPropertySet)UnoRuntime.queryInterface( XPropertySet.class,
+            controlModel = UnoRuntime.queryInterface( XPropertySet.class,
                 nameAcc.getByName( _accessPath[i] ) );
-            nameAcc = (XNameAccess)UnoRuntime.queryInterface( XNameAccess.class,
+            nameAcc = UnoRuntime.queryInterface( XNameAccess.class,
                 controlModel );
             ++i;
         }
diff --git a/forms/qa/integration/forms/ListSelection.java b/forms/qa/integration/forms/ListSelection.java
index a7a03889ad4a..5d080cb7691c 100644
--- a/forms/qa/integration/forms/ListSelection.java
+++ b/forms/qa/integration/forms/ListSelection.java
@@ -100,12 +100,12 @@ public class ListSelection extends integration.forms.TestCase
                 XSpreadsheet activeSheet = view.getActiveSheet();
 
                 // Accessibility access to the list box control in this sheet
-                XAccessible accessibleListBox = (XAccessible)UnoRuntime.queryInterface(
+                XAccessible accessibleListBox = UnoRuntime.queryInterface(
                     XAccessible.class, getListBoxControl( activeSheet ) );
                 XAccessibleContext context = accessibleListBox.getAccessibleContext();
 
                 // the first "accessible child" of a list box is its list
-                XAccessibleSelection accessibleList = (XAccessibleSelection)UnoRuntime.queryInterface(
+                XAccessibleSelection accessibleList = UnoRuntime.queryInterface(
                     XAccessibleSelection.class, context.getAccessibleChild( 1 ) );
 
                 int selectPosition = generator.nextInt( 5 );
@@ -120,7 +120,7 @@ public class ListSelection extends integration.forms.TestCase
                 }
                 catch( java.lang.InterruptedException e ) { }
 
-                XNamed sheetName = (XNamed)UnoRuntime.queryInterface( XNamed.class, view.getActiveSheet() );
+                XNamed sheetName = UnoRuntime.queryInterface( XNamed.class, view.getActiveSheet() );
                 assure( "sheet was not selected as expected!", sheetName.getName().equals( selectSheetName ) );
             }
         }
@@ -137,7 +137,7 @@ public class ListSelection extends integration.forms.TestCase
         try
         {
             XPropertySet docProps = dbfTools.queryPropertySet( m_document.getDocument() );
-            XLibraryContainer basicLibs = (XLibraryContainer)UnoRuntime.queryInterface(
+            XLibraryContainer basicLibs = UnoRuntime.queryInterface(
                 XLibraryContainer.class, docProps.getPropertyValue( "BasicLibraries" ) );
             XNameContainer basicLib = basicLibs.createLibrary( "default" );
 
@@ -184,7 +184,7 @@ public class ListSelection extends integration.forms.TestCase
         {
             XIndexContainer parentForm = (XIndexContainer)dbfTools.getParent( controlModel, XIndexContainer.class );
 
-            XEventAttacherManager manager = (XEventAttacherManager)UnoRuntime.queryInterface(
+            XEventAttacherManager manager = UnoRuntime.queryInterface(
                 XEventAttacherManager.class, parentForm );
 
             int containerPosition = -1;
@@ -230,7 +230,7 @@ public class ListSelection extends integration.forms.TestCase
         String[] newSheetNames = new String[] { "first", "second", "third", "forth", "fifth" };
 
         // give the first one the right name
-        XNamed sheet = (XNamed)UnoRuntime.queryInterface( XNamed.class,
+        XNamed sheet = UnoRuntime.queryInterface( XNamed.class,
             sheets.getByName( sheetNames[ 0 ] )
         );
         sheet.setName( newSheetNames[ 0 ] );
@@ -274,7 +274,7 @@ public class ListSelection extends integration.forms.TestCase
     /* ------------------------------------------------------------------ */
     protected XControlModel getListBoxModel( XSpreadsheet sheet )
     {
-        XDrawPageSupplier suppPage = (XDrawPageSupplier)UnoRuntime.queryInterface(
+        XDrawPageSupplier suppPage = UnoRuntime.queryInterface(
             XDrawPageSupplier.class, sheet );
         FormComponent formsRoot = new FormComponent( suppPage.getDrawPage() );
         XControlModel listBoxModel = (XControlModel)formsRoot.getByIndex( 0 ).
@@ -285,7 +285,7 @@ public class ListSelection extends integration.forms.TestCase
     /* ------------------------------------------------------------------ */
     protected XListBox getListBoxControl( XSpreadsheet sheet ) throws com.sun.star.uno.Exception
     {
-        return (XListBox)UnoRuntime.queryInterface(
+        return UnoRuntime.queryInterface(
             XListBox.class, m_document.getCurrentView().getControl( getListBoxModel( sheet ) ) );
     }
  }
diff --git a/forms/qa/integration/forms/RadioButtons.java b/forms/qa/integration/forms/RadioButtons.java
index e883f8a6ef08..b2c641caad73 100644
--- a/forms/qa/integration/forms/RadioButtons.java
+++ b/forms/qa/integration/forms/RadioButtons.java
@@ -255,7 +255,7 @@ public class RadioButtons extends complexlib.ComplexTestCase
             // close our document
             if ( m_document != null )
             {
-                XCloseable closeDoc = (XCloseable)UnoRuntime.queryInterface( XCloseable.class,
+                XCloseable closeDoc = UnoRuntime.queryInterface( XCloseable.class,
                     m_document.getDocument() );
                 closeDoc.close( true );
             }
@@ -295,7 +295,7 @@ public class RadioButtons extends complexlib.ComplexTestCase
     {
         XPropertySet xRadio = getRadioModel( groupName, refValue, form );
 
-        XRadioButton radioButton = (XRadioButton)UnoRuntime.queryInterface(
+        XRadioButton radioButton = UnoRuntime.queryInterface(
             XRadioButton.class, m_document.getCurrentView().getControl( xRadio ) );
         radioButton.setState( true );
     }
diff --git a/forms/qa/integration/forms/SingleControlValidation.java b/forms/qa/integration/forms/SingleControlValidation.java
index ac54510f6357..05b3fa9e0afa 100644
--- a/forms/qa/integration/forms/SingleControlValidation.java
+++ b/forms/qa/integration/forms/SingleControlValidation.java
@@ -100,7 +100,7 @@ public class SingleControlValidation implements XFormComponentValidityListener
                 if ( controls[ i ].getPropertySetInfo().hasPropertyByName( "Border" ) )
                     controls[ i ].setPropertyValue( "Border", new Short( (short)2 ) );
 
-                XValidatableFormComponent xComp = (XValidatableFormComponent)UnoRuntime.queryInterface( XValidatableFormComponent.class,
+                XValidatableFormComponent xComp = UnoRuntime.queryInterface( XValidatableFormComponent.class,
                     controls[ i ] );
                 xComp.addFormComponentValidityListener( this );
             }
@@ -122,7 +122,7 @@ public class SingleControlValidation implements XFormComponentValidityListener
             m_explanationField = m_formLayer.createControlAndShape( "FixedText", columnPos, controlPos, 70, 4, null );
             m_explanationField.setPropertyValue( "Label", new String( "" ) );
 
-            XValidatable xValidatable = (XValidatable)UnoRuntime.queryInterface( XValidatable.class, m_inputField );
+            XValidatable xValidatable = UnoRuntime.queryInterface( XValidatable.class, m_inputField );
             xValidatable.setValidator( m_validator );
         }
         catch( java.lang.Exception e  )
@@ -148,7 +148,7 @@ public class SingleControlValidation implements XFormComponentValidityListener
         {
             if ( m_inputField.equals( eventObject.Source ) )
             {
-                XValidatableFormComponent xComp = (XValidatableFormComponent)UnoRuntime.queryInterface( XValidatableFormComponent.class,
+                XValidatableFormComponent xComp = UnoRuntime.queryInterface( XValidatableFormComponent.class,
                     eventObject.Source );
                 // the current value
                 Object value = xComp.getCurrentValue();
diff --git a/forms/qa/integration/forms/SpreadsheetDocument.java b/forms/qa/integration/forms/SpreadsheetDocument.java
index cd653a773231..e6c7f920d3c2 100644
--- a/forms/qa/integration/forms/SpreadsheetDocument.java
+++ b/forms/qa/integration/forms/SpreadsheetDocument.java
@@ -49,7 +49,7 @@ public class SpreadsheetDocument extends DocumentHelper
     */
     public XSpreadsheets getSheets() throws com.sun.star.uno.Exception
     {
-        XSpreadsheetDocument spreadsheetDoc = (XSpreadsheetDocument)UnoRuntime.queryInterface( XSpreadsheetDocument.class,
+        XSpreadsheetDocument spreadsheetDoc = UnoRuntime.queryInterface( XSpreadsheetDocument.class,
             getDocument()
         );
         return spreadsheetDoc.getSheets();
@@ -60,10 +60,10 @@ public class SpreadsheetDocument extends DocumentHelper
     */
     public XCellRange getSheet( int index ) throws com.sun.star.uno.Exception
     {
-        XIndexAccess sheets = (XIndexAccess)UnoRuntime.queryInterface( XIndexAccess.class,
+        XIndexAccess sheets = UnoRuntime.queryInterface( XIndexAccess.class,
             getSheets()
         );
-        return (XCellRange)UnoRuntime.queryInterface( XCellRange.class,
+        return UnoRuntime.queryInterface( XCellRange.class,
             sheets.getByIndex( index )
         );
     }
@@ -94,7 +94,7 @@ public class SpreadsheetDocument extends DocumentHelper
         {
             CellAddress address = new CellAddress( sheet, column, row );
             Object[] initParam = new Object[] { new NamedValue( "BoundCell", address ) };
-            cellBinding = (com.sun.star.form.binding.XValueBinding)UnoRuntime.queryInterface(
+            cellBinding = UnoRuntime.queryInterface(
                 com.sun.star.form.binding.XValueBinding.class,
                 createInstanceWithArguments(
                     supportIntegerValues ? "com.sun.star.table.ListPositionCellBinding"
@@ -123,7 +123,7 @@ public class SpreadsheetDocument extends DocumentHelper
             CellRangeAddress rangeAddress = new CellRangeAddress( sheet, column,
                 topRow, column, bottomRow );
             Object[] initParam = new Object[] { new NamedValue( "CellRange", rangeAddress ) };
-            entrySource = (com.sun.star.form.binding.XListEntrySource)UnoRuntime.queryInterface(
+            entrySource = UnoRuntime.queryInterface(
                 com.sun.star.form.binding.XListEntrySource.class,
                 createInstanceWithArguments(
                     "com.sun.star.table.CellRangeListSource", initParam ) );
diff --git a/forms/qa/integration/forms/SpreadsheetView.java b/forms/qa/integration/forms/SpreadsheetView.java
index fd958d5d478f..dbc05d82b73d 100644
--- a/forms/qa/integration/forms/SpreadsheetView.java
+++ b/forms/qa/integration/forms/SpreadsheetView.java
@@ -47,16 +47,16 @@ public class SpreadsheetView extends integration.forms.DocumentViewHelper
         try
         {
             // get the sheet to activate
-            XSpreadsheetDocument doc = (XSpreadsheetDocument)UnoRuntime.queryInterface(
+            XSpreadsheetDocument doc = UnoRuntime.queryInterface(
                 XSpreadsheetDocument.class, getDocument().getDocument() );
-            XIndexAccess sheets = (XIndexAccess)UnoRuntime.queryInterface(
+            XIndexAccess sheets = UnoRuntime.queryInterface(
                 XIndexAccess.class, doc.getSheets() );
 
-            XSpreadsheet sheet = (XSpreadsheet)UnoRuntime.queryInterface(
+            XSpreadsheet sheet = UnoRuntime.queryInterface(
                 XSpreadsheet.class, sheets.getByIndex( sheetIndex ) );
 
             // activate
-            XSpreadsheetView view = (XSpreadsheetView)UnoRuntime.queryInterface(
+            XSpreadsheetView view = UnoRuntime.queryInterface(
                 XSpreadsheetView.class, getController() );
             view.setActiveSheet( sheet );
         }
diff --git a/forms/qa/integration/forms/TableCellTextBinding.java b/forms/qa/integration/forms/TableCellTextBinding.java
index 04f2434cb0ce..40a5d698617b 100644
--- a/forms/qa/integration/forms/TableCellTextBinding.java
+++ b/forms/qa/integration/forms/TableCellTextBinding.java
@@ -53,7 +53,7 @@ public class TableCellTextBinding
     /** Creates a new instance of TableCellTextBinding */
     public TableCellTextBinding( XCell cell )
     {
-        m_cellText = (XTextRange)UnoRuntime.queryInterface( XTextRange.class, cell );
+        m_cellText = UnoRuntime.queryInterface( XTextRange.class, cell );
 
         m_newCellText = new String();
         m_listeners = new java.util.LinkedList();
diff --git a/forms/qa/integration/forms/ValueBinding.java b/forms/qa/integration/forms/ValueBinding.java
index 33773a0c7c5a..2f4d58aee133 100644
--- a/forms/qa/integration/forms/ValueBinding.java
+++ b/forms/qa/integration/forms/ValueBinding.java
@@ -82,11 +82,11 @@ public class ValueBinding extends integration.forms.TestCase
 
         // insert a table with exactly one cell. The content of this table will be synced with
         // the content of a form control
-        XTextDocument textDoc = (XTextDocument)UnoRuntime.queryInterface( XTextDocument.class,  m_document.getDocument() );
+        XTextDocument textDoc = UnoRuntime.queryInterface( XTextDocument.class,  m_document.getDocument() );
         XText documentText = textDoc.getText();
         XTextCursor textCursor = documentText.createTextCursor();
 
-        XTextTable table = (XTextTable)UnoRuntime.queryInterface( XTextTable.class,
+        XTextTable table = UnoRuntime.queryInterface( XTextTable.class,
             m_document.createInstance( "com.sun.star.text.TextTable" )
         );
         table.initialize( 1, 1 );
@@ -98,7 +98,7 @@ public class ValueBinding extends integration.forms.TestCase
         // create a value binding for the first cell of the table
         XValueBinding cellBinding = new TableCellTextBinding( table.getCellByName( "A1" ) );
         // and bind it to the control
-        XBindableValue bindable = (XBindableValue)UnoRuntime.queryInterface(
+        XBindableValue bindable = UnoRuntime.queryInterface(
             XBindableValue.class, textControl
         );
         bindable.setValueBinding( cellBinding );
diff --git a/forms/qa/integration/forms/XMLFormSettings.java b/forms/qa/integration/forms/XMLFormSettings.java
index 70f9d279412f..16e766ceac25 100644
--- a/forms/qa/integration/forms/XMLFormSettings.java
+++ b/forms/qa/integration/forms/XMLFormSettings.java
@@ -101,7 +101,7 @@ public class XMLFormSettings extends complexlib.ComplexTestCase
         File tempFile = File.createTempFile( "xmlforms", ".odt" );
         tempFile.deleteOnExit();
         String fileURL = tempFile.toURI().toURL().toExternalForm();
-        XStorable store = (XStorable)UnoRuntime.queryInterface( XStorable.class,
+        XStorable store = UnoRuntime.queryInterface( XStorable.class,
             m_document.getDocument() );
         store.storeAsURL( fileURL, new PropertyValue[] {} );
         assure( "document still modified after saving it", !m_document.isModified() );
@@ -118,7 +118,7 @@ public class XMLFormSettings extends complexlib.ComplexTestCase
     {
         if ( m_document != null )
         {
-            XCloseable closeDoc = (XCloseable)UnoRuntime.queryInterface( XCloseable.class,
+            XCloseable closeDoc = UnoRuntime.queryInterface( XCloseable.class,
                 m_document.getDocument() );
             closeDoc.close( true );
         }
@@ -127,9 +127,9 @@ public class XMLFormSettings extends complexlib.ComplexTestCase
     /* ------------------------------------------------------------------ */
     private static void impl_bind( XPropertySet _control, XPropertySet _binding ) throws IncompatibleTypesException
     {
-        XBindableValue bindableControl = (XBindableValue)UnoRuntime.queryInterface(
+        XBindableValue bindableControl = UnoRuntime.queryInterface(
             XBindableValue.class, _control );
-        XValueBinding binding = (XValueBinding)UnoRuntime.queryInterface(
+        XValueBinding binding = UnoRuntime.queryInterface(
             XValueBinding.class, _binding );
         bindableControl.setValueBinding( binding );
     }
@@ -209,7 +209,7 @@ public class XMLFormSettings extends complexlib.ComplexTestCase
      */
     private void impl_storeDocument() throws IOException
     {
-        XStorable store = (XStorable)UnoRuntime.queryInterface( XStorable.class,
+        XStorable store = UnoRuntime.queryInterface( XStorable.class,
             m_document.getDocument() );
         store.store();
         assure( "document still modified after saving it", !m_document.isModified() );
diff --git a/forms/qa/org/openoffice/complex/forms/tools/ResultSet.java b/forms/qa/org/openoffice/complex/forms/tools/ResultSet.java
index 04a84fd8a8ce..7f87db745387 100644
--- a/forms/qa/org/openoffice/complex/forms/tools/ResultSet.java
+++ b/forms/qa/org/openoffice/complex/forms/tools/ResultSet.java
@@ -39,8 +39,8 @@ public class ResultSet implements XResultSet, XRow
 
     public ResultSet( final Object _resultSet )
     {
-        m_resultSet = (XResultSet)UnoRuntime.queryInterface( XResultSet.class, _resultSet );
-        m_row = (XRow)UnoRuntime.queryInterface( XRow.class, _resultSet );
+        m_resultSet = UnoRuntime.queryInterface( XResultSet.class, _resultSet );
+        m_row = UnoRuntime.queryInterface( XRow.class, _resultSet );
     }
 
     public
diff --git a/forms/qa/org/openoffice/xforms/Model.java b/forms/qa/org/openoffice/xforms/Model.java
index e8d1361ab506..d0af835e8053 100644
--- a/forms/qa/org/openoffice/xforms/Model.java
+++ b/forms/qa/org/openoffice/xforms/Model.java
@@ -32,9 +32,9 @@ public class Model
 
     protected Model( Object _model )
     {
-        m_model = (XModel)UnoRuntime.queryInterface( XModel.class, _model );
-        m_modelProps = (XPropertySet)UnoRuntime.queryInterface( XPropertySet.class, _model );
-        m_helper = (XFormsUIHelper1)UnoRuntime.queryInterface( XFormsUIHelper1.class,
+        m_model = UnoRuntime.queryInterface( XModel.class, _model );
+        m_modelProps = UnoRuntime.queryInterface( XPropertySet.class, _model );
+        m_helper = UnoRuntime.queryInterface( XFormsUIHelper1.class,
             m_model );
     }
 
diff --git a/forms/qa/org/openoffice/xforms/XMLDocument.java b/forms/qa/org/openoffice/xforms/XMLDocument.java
index 80d9764d249d..339f14a564e6 100644
--- a/forms/qa/org/openoffice/xforms/XMLDocument.java
+++ b/forms/qa/org/openoffice/xforms/XMLDocument.java
@@ -52,7 +52,7 @@ public class XMLDocument extends integration.forms.DocumentHelper
     /* ------------------------------------------------------------------ */
     private void impl_initialize( XComponent _document )
     {
-        m_formsSupplier = (XFormsSupplier)UnoRuntime.queryInterface( XFormsSupplier.class,
+        m_formsSupplier = UnoRuntime.queryInterface( XFormsSupplier.class,
             _document );
 
         if ( m_formsSupplier == null )
@@ -86,10 +86,10 @@ public class XMLDocument extends integration.forms.DocumentHelper
         XModel newModel = null;
         try
         {
-            newModel = (XModel) UnoRuntime.queryInterface( XModel.class,
+            newModel = UnoRuntime.queryInterface( XModel.class,
                 getOrb().createInstance( "com.sun.star.xforms.Model" ) );
             newModel.setID(_modelName);
-            XFormsUIHelper1 modelHelper = (XFormsUIHelper1) UnoRuntime.queryInterface(
+            XFormsUIHelper1 modelHelper = UnoRuntime.queryInterface(
                 XFormsUIHelper1.class, newModel );
             modelHelper.newInstance( "Instance 1", new String(), true );
             newModel.initialize();
diff --git a/nlpsolver/src/com/sun/star/comp/Calc/NLPSolver/BaseNLPSolver.java b/nlpsolver/src/com/sun/star/comp/Calc/NLPSolver/BaseNLPSolver.java
index 520a4eaa3654..60bdcf9f7272 100644
--- a/nlpsolver/src/com/sun/star/comp/Calc/NLPSolver/BaseNLPSolver.java
+++ b/nlpsolver/src/com/sun/star/comp/Calc/NLPSolver/BaseNLPSolver.java
@@ -86,7 +86,7 @@ public abstract class BaseNLPSolver extends WeakBase
         m_componentFactory = xContext.getServiceManager();
         try {
             Object toolkit = m_componentFactory.createInstanceWithContext("com.sun.star.awt.Toolkit", xContext);
-            m_xReschedule = (XReschedule) UnoRuntime.queryInterface(XReschedule.class, toolkit);
+            m_xReschedule = UnoRuntime.queryInterface(XReschedule.class, toolkit);
         } catch (Exception ex) {
             Logger.getLogger(BaseNLPSolver.class.getName()).log(Level.SEVERE, null, ex);
         }
@@ -145,7 +145,7 @@ public abstract class BaseNLPSolver extends WeakBase
 
     public void setDocument(XSpreadsheetDocument document) {
         m_document = document;
-        m_xModel = (XModel) UnoRuntime.queryInterface(XModel.class, m_document);
+        m_xModel = UnoRuntime.queryInterface(XModel.class, m_document);
     }
 
     public CellAddress getObjective() {
@@ -348,8 +348,8 @@ public abstract class BaseNLPSolver extends WeakBase
     protected XCell getCell(int col, int row, int sheet) {
         try {
             XSpreadsheets xSpreadsheets = m_document.getSheets();
-            XIndexAccess xSheetIndex = (XIndexAccess) UnoRuntime.queryInterface(XIndexAccess.class, xSpreadsheets);
-            XSpreadsheet xSpreadsheet = (XSpreadsheet) UnoRuntime.queryInterface(XSpreadsheet.class, xSheetIndex.getByIndex(sheet));
+            XIndexAccess xSheetIndex = UnoRuntime.queryInterface(XIndexAccess.class, xSpreadsheets);
+            XSpreadsheet xSpreadsheet = UnoRuntime.queryInterface(XSpreadsheet.class, xSheetIndex.getByIndex(sheet));
             return xSpreadsheet.getCellByPosition(col, row);
         } catch (IndexOutOfBoundsException ex) {
             Logger.getLogger(BaseNLPSolver.class.getName()).log(Level.SEVERE, null, ex);
@@ -368,9 +368,9 @@ public abstract class BaseNLPSolver extends WeakBase
     protected XCellRangeData getCellRangeData(int sheet, int startCol, int startRow, int endCol, int endRow) {
         try {
             XSpreadsheets xSpreadsheets = m_document.getSheets();
-            XIndexAccess xSheetIndex = (XIndexAccess) UnoRuntime.queryInterface(XIndexAccess.class, xSpreadsheets);
-            XSpreadsheet xSpreadsheet = (XSpreadsheet) UnoRuntime.queryInterface(XSpreadsheet.class, xSheetIndex.getByIndex(sheet));
-            return (XCellRangeData) UnoRuntime.queryInterface(XCellRangeData.class, xSpreadsheet.getCellRangeByPosition(startCol, startRow, endCol, endRow));
+            XIndexAccess xSheetIndex = UnoRuntime.queryInterface(XIndexAccess.class, xSpreadsheets);
+            XSpreadsheet xSpreadsheet = UnoRuntime.queryInterface(XSpreadsheet.class, xSheetIndex.getByIndex(sheet));
+            return UnoRuntime.queryInterface(XCellRangeData.class, xSpreadsheet.getCellRangeByPosition(startCol, startRow, endCol, endRow));
         } catch (IndexOutOfBoundsException ex) {
             Logger.getLogger(BaseNLPSolver.class.getName()).log(Level.SEVERE, null, ex);
         } catch (WrappedTargetException ex) {
@@ -388,9 +388,9 @@ public abstract class BaseNLPSolver extends WeakBase
     protected XChartDataArray getChartDataArray(int sheet, int startCol, int startRow, int endCol, int endRow) {
         try {
             XSpreadsheets xSpreadsheets = m_document.getSheets();
-            XIndexAccess xSheetIndex = (XIndexAccess) UnoRuntime.queryInterface(XIndexAccess.class, xSpreadsheets);
-            XSpreadsheet xSpreadsheet = (XSpreadsheet) UnoRuntime.queryInterface(XSpreadsheet.class, xSheetIndex.getByIndex(sheet));
-            return (XChartDataArray) UnoRuntime.queryInterface(XChartDataArray.class, xSpreadsheet.getCellRangeByPosition(startCol, startRow, endCol, endRow));
+            XIndexAccess xSheetIndex = UnoRuntime.queryInterface(XIndexAccess.class, xSpreadsheets);
+            XSpreadsheet xSpreadsheet = UnoRuntime.queryInterface(XSpreadsheet.class, xSheetIndex.getByIndex(sheet));
+            return UnoRuntime.queryInterface(XChartDataArray.class, xSpreadsheet.getCellRangeByPosition(startCol, startRow, endCol, endRow));
         } catch (IndexOutOfBoundsException ex) {
             Logger.getLogger(BaseNLPSolver.class.getName()).log(Level.SEVERE, null, ex);
         } catch (WrappedTargetException ex) {
@@ -494,17 +494,17 @@ public abstract class BaseNLPSolver extends WeakBase
             m_xModel.unlockControllers();
 
         try {
-            XIndexAccess xSpreadsheets = (XIndexAccess) UnoRuntime.queryInterface(XIndexAccess.class, m_document.getSheets());
+            XIndexAccess xSpreadsheets = UnoRuntime.queryInterface(XIndexAccess.class, m_document.getSheets());
             int sheets = xSpreadsheets.getCount();
             for (int i = 0; i < sheets; i++) {
                 Object sheet = xSpreadsheets.getByIndex(i);
-                XTableChartsSupplier xTableChartsSupplier = (XTableChartsSupplier) UnoRuntime.queryInterface(XTableChartsSupplier.class, sheet);
-                XIndexAccess xCharts = (XIndexAccess) UnoRuntime.queryInterface(XIndexAccess.class, xTableChartsSupplier.getCharts());
+                XTableChartsSupplier xTableChartsSupplier = UnoRuntime.queryInterface(XTableChartsSupplier.class, sheet);
+                XIndexAccess xCharts = UnoRuntime.queryInterface(XIndexAccess.class, xTableChartsSupplier.getCharts());
                 int charts = xCharts.getCount();
                 for (int j = 0; j < charts; j++) {
                     Object chart = xCharts.getByIndex(j);
-                    XEmbeddedObjectSupplier xChartObjects = (XEmbeddedObjectSupplier) UnoRuntime.queryInterface(XEmbeddedObjectSupplier.class, chart);
-                    XModel xChartModel = (XModel) UnoRuntime.queryInterface(XModel.class, xChartObjects.getEmbeddedObject());
+                    XEmbeddedObjectSupplier xChartObjects = UnoRuntime.queryInterface(XEmbeddedObjectSupplier.class, chart);
+                    XModel xChartModel = UnoRuntime.queryInterface(XModel.class, xChartObjects.getEmbeddedObject());
                     if (lock)
                         xChartModel.lockControllers();
                     else
diff --git a/nlpsolver/src/com/sun/star/comp/Calc/NLPSolver/ResourceManager.java b/nlpsolver/src/com/sun/star/comp/Calc/NLPSolver/ResourceManager.java
index 61935d28e63a..6780826a43ff 100644
--- a/nlpsolver/src/com/sun/star/comp/Calc/NLPSolver/ResourceManager.java
+++ b/nlpsolver/src/com/sun/star/comp/Calc/NLPSolver/ResourceManager.java
@@ -60,12 +60,12 @@ public class ResourceManager {
         m_resourceBaseUrl = m_oxtRoot + relativeResourceBaseUrl;
 
         try {
-            XMultiServiceFactory xConfig = (XMultiServiceFactory) UnoRuntime.queryInterface(XMultiServiceFactory.class,
+            XMultiServiceFactory xConfig = UnoRuntime.queryInterface(XMultiServiceFactory.class,
                 m_context.getServiceManager().createInstanceWithContext("com.sun.star.configuration.ConfigurationProvider", m_context));
 
             Object[] args = new Object[1];
             args[0] = new PropertyValue("nodepath", 0, "/org.openoffice.Setup/L10N", PropertyState.DIRECT_VALUE);
-            XPropertySet xConfigProps = (XPropertySet) UnoRuntime.queryInterface(XPropertySet.class,
+            XPropertySet xConfigProps = UnoRuntime.queryInterface(XPropertySet.class,
                 xConfig.createInstanceWithArguments("com.sun.star.configuration.ConfigurationAccess", args));
             String[] locale = AnyConverter.toString(xConfigProps.getPropertyValue("ooLocale")).split("-");
             String lang = locale[0];
diff --git a/nlpsolver/src/com/sun/star/comp/Calc/NLPSolver/dialogs/BaseDialog.java b/nlpsolver/src/com/sun/star/comp/Calc/NLPSolver/dialogs/BaseDialog.java
index 45ec08c6fe0f..b0a1ebd303ea 100644
--- a/nlpsolver/src/com/sun/star/comp/Calc/NLPSolver/dialogs/BaseDialog.java
+++ b/nlpsolver/src/com/sun/star/comp/Calc/NLPSolver/dialogs/BaseDialog.java
@@ -76,9 +76,9 @@ public abstract class BaseDialog extends BaseControl {
     public XFrame getCurrentFrame() {
         try {
             Object oDesktop = xMCF.createInstanceWithContext("com.sun.star.frame.Desktop", context);
-            XDesktop xDesktop = (XDesktop) UnoRuntime.queryInterface(XDesktop.class, oDesktop);
+            XDesktop xDesktop = UnoRuntime.queryInterface(XDesktop.class, oDesktop);
             XComponent xComponent = xDesktop.getCurrentComponent();
-            XModel xModel = (XModel) UnoRuntime.queryInterface(XModel.class, xComponent);
+            XModel xModel = UnoRuntime.queryInterface(XModel.class, xComponent);
             XController xController = xModel.getCurrentController();
             return xController.getFrame();
         } catch (Exception e) {
@@ -96,26 +96,26 @@ public abstract class BaseDialog extends BaseControl {
         try {
             xMCF = context.getServiceManager();
             setUnoModel(xMCF.createInstanceWithContext("com.sun.star.awt.UnoControlDialogModel", context));
-            xMSF = (XMultiServiceFactory) UnoRuntime.queryInterface(XMultiServiceFactory.class, getUnoModel());
+            xMSF = UnoRuntime.queryInterface(XMultiServiceFactory.class, getUnoModel());
             
             setProperty("Title", title);
             setPosition(x, y);
             setSize(width, height);
 
             unoControl = xMCF.createInstanceWithContext("com.sun.star.awt.UnoControlDialog", context);
-            XControl xControl = (XControl)UnoRuntime.queryInterface(XControl.class, unoControl);
-            XControlModel xControlModel = (XControlModel)UnoRuntime.queryInterface(XControlModel.class, getUnoModel());
+            XControl xControl = UnoRuntime.queryInterface(XControl.class, unoControl);
+            XControlModel xControlModel = UnoRuntime.queryInterface(XControlModel.class, getUnoModel());
             xControl.setModel(xControlModel);
             
             toolkit = xMCF.createInstanceWithContext("com.sun.star.awt.Toolkit", context);
-            XToolkit xToolkit = (XToolkit) UnoRuntime.queryInterface(XToolkit.class, toolkit);
-            xWindow = (XWindow) UnoRuntime.queryInterface(XWindow.class, unoControl);
+            XToolkit xToolkit = UnoRuntime.queryInterface(XToolkit.class, toolkit);
+            xWindow = UnoRuntime.queryInterface(XWindow.class, unoControl);
             xWindow.setVisible(false);
-            XWindowPeer xParentWindowPeer = (XWindowPeer) UnoRuntime.queryInterface(XWindowPeer.class, getCurrentFrame().getComponentWindow());
+            XWindowPeer xParentWindowPeer = UnoRuntime.queryInterface(XWindowPeer.class, getCurrentFrame().getComponentWindow());
             xControl.createPeer(xToolkit, xParentWindowPeer);
             xWindowPeer = xControl.getPeer();
             
-            xDialog = (XDialog) UnoRuntime.queryInterface(XDialog.class, unoControl);
+            xDialog = UnoRuntime.queryInterface(XDialog.class, unoControl);
             
             //center if necessary
             if (x < 0 || y < 0) {
@@ -137,7 +137,7 @@ public abstract class BaseDialog extends BaseControl {
 
     @Override
     protected void finalize() throws Throwable {
-        XComponent xComponent = (XComponent) UnoRuntime.queryInterface(XComponent.class, unoControl);
+        XComponent xComponent = UnoRuntime.queryInterface(XComponent.class, unoControl);
         xComponent.dispose();
         super.finalize();
     }
diff --git a/nlpsolver/src/com/sun/star/comp/Calc/NLPSolver/dialogs/EvolutionarySolverStatusUno.java b/nlpsolver/src/com/sun/star/comp/Calc/NLPSolver/dialogs/EvolutionarySolverStatusUno.java
index 8cf665299379..6cb8adfaaf9a 100644
--- a/nlpsolver/src/com/sun/star/comp/Calc/NLPSolver/dialogs/EvolutionarySolverStatusUno.java
+++ b/nlpsolver/src/com/sun/star/comp/Calc/NLPSolver/dialogs/EvolutionarySolverStatusUno.java
@@ -274,7 +274,7 @@ public class EvolutionarySolverStatusUno extends BaseDialog
     }
 
     public void dispose() {
-        XComponent component = (XComponent) UnoRuntime.queryInterface(XComponent.class, xDialog);
+        XComponent component = UnoRuntime.queryInterface(XComponent.class, xDialog);
         component.dispose();
     }
 
diff --git a/nlpsolver/src/com/sun/star/comp/Calc/NLPSolver/dialogs/controls/BaseControl.java b/nlpsolver/src/com/sun/star/comp/Calc/NLPSolver/dialogs/controls/BaseControl.java
index d5c395c5b846..84c38d66e7fd 100644
--- a/nlpsolver/src/com/sun/star/comp/Calc/NLPSolver/dialogs/controls/BaseControl.java
+++ b/nlpsolver/src/com/sun/star/comp/Calc/NLPSolver/dialogs/controls/BaseControl.java
@@ -62,7 +62,7 @@ public abstract class BaseControl {
      */
     protected void setUnoModel(Object unoModel) {
         this.unoModel = unoModel;
-        properties = (XPropertySet) UnoRuntime.queryInterface(XPropertySet.class, unoModel);
+        properties = UnoRuntime.queryInterface(XPropertySet.class, unoModel);
     }
     
     public Object getUnoControl() {
@@ -73,10 +73,10 @@ public abstract class BaseControl {
         //TODO : remove from existing parentControl
         try {
             String name = getName();
-            XNameContainer nameContainer = (XNameContainer) UnoRuntime.queryInterface(XNameContainer.class, parentControl.unoModel);
+            XNameContainer nameContainer = UnoRuntime.queryInterface(XNameContainer.class, parentControl.unoModel);
             nameContainer.insertByName(name, unoModel);
             
-            XControlContainer controlContainer = (XControlContainer) UnoRuntime.queryInterface(XControlContainer.class, parentControl.unoControl);
+            XControlContainer controlContainer = UnoRuntime.queryInterface(XControlContainer.class, parentControl.unoControl);
             unoControl = controlContainer.getControl(name);
             
             this.parentControl = parentControl;
@@ -138,7 +138,7 @@ public abstract class BaseControl {
     }
 
     public void setVisible(boolean visible) {
-        XWindow xWindow = (XWindow) UnoRuntime.queryInterface(XWindow.class, unoControl);
+        XWindow xWindow = UnoRuntime.queryInterface(XWindow.class, unoControl);
         xWindow.setVisible(visible);
     }
     
diff --git a/nlpsolver/src/com/sun/star/comp/Calc/NLPSolver/dialogs/controls/Button.java b/nlpsolver/src/com/sun/star/comp/Calc/NLPSolver/dialogs/controls/Button.java
index 46f60f380097..bf59d5210bdc 100644
--- a/nlpsolver/src/com/sun/star/comp/Calc/NLPSolver/dialogs/controls/Button.java
+++ b/nlpsolver/src/com/sun/star/comp/Calc/NLPSolver/dialogs/controls/Button.java
@@ -59,7 +59,7 @@ public class Button extends LabeledControl {
     @Override
     public void setParentControl(BaseControl parentControl) {
         super.setParentControl(parentControl);
-        xButton = (XButton) UnoRuntime.queryInterface(XButton.class, unoControl);
+        xButton = UnoRuntime.queryInterface(XButton.class, unoControl);
     }
     
     public void addActionListener(XActionListener actionListener) {
diff --git a/nlpsolver/src/com/sun/star/comp/Calc/NLPSolver/dialogs/controls/ProgressBar.java b/nlpsolver/src/com/sun/star/comp/Calc/NLPSolver/dialogs/controls/ProgressBar.java
index 8b17a597a6f5..a62ea7d9fab3 100644
--- a/nlpsolver/src/com/sun/star/comp/Calc/NLPSolver/dialogs/controls/ProgressBar.java
+++ b/nlpsolver/src/com/sun/star/comp/Calc/NLPSolver/dialogs/controls/ProgressBar.java
@@ -57,7 +57,7 @@ public class ProgressBar extends BaseControl {
     @Override
     public void setParentControl(BaseControl parentControl) {
         super.setParentControl(parentControl);
-        m_progressBar = (XProgressBar) UnoRuntime.queryInterface(XProgressBar.class, unoControl);
+        m_progressBar = UnoRuntime.queryInterface(XProgressBar.class, unoControl);
     }
 
     public void setRange(int min, int max) {
diff --git a/odk/examples/DevelopersGuide/Charts/CalcHelper.java b/odk/examples/DevelopersGuide/Charts/CalcHelper.java
index ec0bea5f6306..ade201ccd297 100644
--- a/odk/examples/DevelopersGuide/Charts/CalcHelper.java
+++ b/odk/examples/DevelopersGuide/Charts/CalcHelper.java
@@ -74,13 +74,13 @@ public class CalcHelper
 
     public XSpreadsheet getChartSheet() throws RuntimeException
     {
-        XNameAccess aSheetsNA = (XNameAccess) UnoRuntime.queryInterface(
+        XNameAccess aSheetsNA = UnoRuntime.queryInterface(
             XNameAccess.class, maSpreadSheetDoc.getSheets() );
 
         XSpreadsheet aSheet = null;
         try
         {
-            aSheet = (XSpreadsheet) UnoRuntime.queryInterface(
+            aSheet = UnoRuntime.queryInterface(
                 XSpreadsheet.class, aSheetsNA.getByName( msChartSheetName ) );
         }
         catch( NoSuchElementException ex )
@@ -97,7 +97,7 @@ public class CalcHelper
 
     public XSpreadsheet getDataSheet() throws RuntimeException
     {
-        XNameAccess aSheetsNA = (XNameAccess) UnoRuntime.queryInterface(
+        XNameAccess aSheetsNA = UnoRuntime.queryInterface(
             XNameAccess.class, maSpreadSheetDoc.getSheets() );
 
         XSpreadsheet aSheet = null;
@@ -105,7 +105,7 @@ public class CalcHelper
         {
             try
             {
-                aSheet = (XSpreadsheet) UnoRuntime.queryInterface(
+                aSheet = UnoRuntime.queryInterface(
                     XSpreadsheet.class, aSheetsNA.getByName( msDataSheetName ) );
             }
             catch( NoSuchElementException ex )
@@ -141,7 +141,7 @@ public class CalcHelper
         // get the sheet to insert the chart
         try
         {
-            aSheet = (XTableChartsSupplier) UnoRuntime.queryInterface(
+            aSheet = UnoRuntime.queryInterface(
                 XTableChartsSupplier.class, getChartSheet() );
         }
         catch( Exception ex )
@@ -151,7 +151,7 @@ public class CalcHelper
         }
 
         XTableCharts aChartCollection = aSheet.getCharts();
-        XNameAccess  aChartCollectionNA = (XNameAccess) UnoRuntime.queryInterface(
+        XNameAccess  aChartCollectionNA = UnoRuntime.queryInterface(
             XNameAccess.class, aChartCollection );
 
         if( aChartCollectionNA != null &&
@@ -168,23 +168,23 @@ public class CalcHelper
 
             try
             {
-                XTableChart aTableChart = (XTableChart) UnoRuntime.queryInterface(
+                XTableChart aTableChart = UnoRuntime.queryInterface(
                     XTableChart.class, aChartCollectionNA.getByName( sChartName ));
 
                 // the table chart is an embedded object which contains the chart document
-                aResult = (XChartDocument) UnoRuntime.queryInterface(
+                aResult = UnoRuntime.queryInterface(
                     XChartDocument.class,
-                    ((XEmbeddedObjectSupplier) UnoRuntime.queryInterface(
+                    UnoRuntime.queryInterface(
                         XEmbeddedObjectSupplier.class,
-                        aTableChart )).getEmbeddedObject());
+                        aTableChart ).getEmbeddedObject());
 
                 // create a diagram via the factory and set this as new diagram
                 aResult.setDiagram(
-                    (XDiagram) UnoRuntime.queryInterface(
+                    UnoRuntime.queryInterface(
                         XDiagram.class,
-                        ((XMultiServiceFactory) UnoRuntime.queryInterface(
+                        UnoRuntime.queryInterface(
                             XMultiServiceFactory.class,
-                            aResult )).createInstance( sChartServiceName )));
+                            aResult ).createInstance( sChartServiceName )));
             }
             catch( NoSuchElementException ex )
             {
@@ -210,7 +210,7 @@ public class CalcHelper
         try
         {
             XSpreadsheet aSheet = getDataSheet();
-            XCellRange aSheetRange = (XCellRange) UnoRuntime.queryInterface( XCellRange.class, aSheet );
+            XCellRange aSheetRange = UnoRuntime.queryInterface( XCellRange.class, aSheet );
 
             aRange = aSheetRange.getCellRangeByPosition(
                 0, 0,
@@ -239,7 +239,7 @@ public class CalcHelper
                     if( 0 == nCol )
                     {
                         // x values: ascending numbers
-                        fValue = (double)nRow + aGenerator.nextDouble();
+                        fValue = nRow + aGenerator.nextDouble();
                     }
                     else
                     {
@@ -273,7 +273,7 @@ public class CalcHelper
         try
         {
             XSpreadsheet aSheet = getDataSheet();
-            XCellRange aSheetRange = (XCellRange) UnoRuntime.queryInterface( XCellRange.class, aSheet );
+            XCellRange aSheetRange = UnoRuntime.queryInterface( XCellRange.class, aSheet );
 
             aRange = aSheetRange.getCellRangeByPosition(
                 0, 0,
@@ -281,14 +281,14 @@ public class CalcHelper
 
             int nCol, nRow;
             double fValue;
-            double fFactor = 2.0 * java.lang.Math.PI / (double)(nRowCount - 1);
+            double fFactor = 2.0 * java.lang.Math.PI / (nRowCount - 1);
             String aFormula;
 
             // set variable factor for cos formula
             int nFactorCol = nColumnCount + 2;
             (aSheet.getCellByPosition( nFactorCol - 1, 0 )).setValue( 0.2 );
 
-            XText xCellText = (XText) UnoRuntime.queryInterface( XText.class, aSheet.getCellByPosition( nFactorCol - 1, 1 ) );
+            XText xCellText = UnoRuntime.queryInterface( XText.class, aSheet.getCellByPosition( nFactorCol - 1, 1 ) );
             xCellText.setString( "Change the factor above and\nwatch the changes in the chart" );
 
             for( nCol = 0; nCol < nColumnCount; nCol++ )
@@ -298,7 +298,7 @@ public class CalcHelper
                     if( 0 == nCol )
                     {
                         // x values: ascending numbers
-                        fValue = (double)nRow * fFactor;
+                        fValue = nRow * fFactor;
                         (aSheet.getCellByPosition( nCol, nRow )).setValue( fValue );
                     }
                     else
@@ -329,11 +329,11 @@ public class CalcHelper
      */
     public void raiseChartSheet()
     {
-        ((XSpreadsheetView) UnoRuntime.queryInterface(
+        UnoRuntime.queryInterface(
             XSpreadsheetView.class,
-            ((XModel) UnoRuntime.queryInterface(
+            UnoRuntime.queryInterface(
                 XModel.class,
-                maSpreadSheetDoc )).getCurrentController()) ).setActiveSheet( getChartSheet() );
+                maSpreadSheetDoc ).getCurrentController()).setActiveSheet( getChartSheet() );
     }
 
 
@@ -354,9 +354,9 @@ public class CalcHelper
         if( maSpreadSheetDoc != null )
         {
             XSpreadsheets  aSheets    = maSpreadSheetDoc.getSheets();
-            XNameContainer aSheetsNC  = (XNameContainer)  UnoRuntime.queryInterface(
+            XNameContainer aSheetsNC  = UnoRuntime.queryInterface(
                 XNameContainer.class, aSheets );
-            XIndexAccess   aSheetsIA  = (XIndexAccess)    UnoRuntime.queryInterface(
+            XIndexAccess   aSheetsIA  = UnoRuntime.queryInterface(
                 XIndexAccess.class, aSheets );
 
             if( aSheets   != null &&
@@ -369,11 +369,11 @@ public class CalcHelper
                     for( int i = aSheetsIA.getCount() - 1; i > 0; i-- )
                     {
                         aSheetsNC.removeByName(
-                            ( (XNamed) UnoRuntime.queryInterface(
-                                XNamed.class, aSheetsIA.getByIndex( i ) )).getName() );
+                            UnoRuntime.queryInterface(
+                                XNamed.class, aSheetsIA.getByIndex( i ) ).getName() );
                     }
 
-                    XNamed aFirstSheet = (XNamed) UnoRuntime.queryInterface(
+                    XNamed aFirstSheet = UnoRuntime.queryInterface(
                         XNamed.class,
                         aSheetsIA.getByIndex( 0 ));
 
diff --git a/odk/examples/DevelopersGuide/Charts/ChartHelper.java b/odk/examples/DevelopersGuide/Charts/ChartHelper.java
index 8f01b52aa426..977983ecbce7 100644
--- a/odk/examples/DevelopersGuide/Charts/ChartHelper.java
+++ b/odk/examples/DevelopersGuide/Charts/ChartHelper.java
@@ -74,29 +74,27 @@ public class ChartHelper
     {
         XChartDocument aResult = null;
 
-        XMultiServiceFactory aFact = (XMultiServiceFactory)
-            UnoRuntime.queryInterface(XMultiServiceFactory.class,
-                                      maContainerDocument );
+        XMultiServiceFactory aFact = UnoRuntime.queryInterface(XMultiServiceFactory.class,
+                                  maContainerDocument );
 
         if( aFact != null )
         {
             try
             {
-                XTextContent xTextContent = (XTextContent)UnoRuntime.queryInterface(
+                XTextContent xTextContent = UnoRuntime.queryInterface(
                 XTextContent.class,
                 aFact.createInstance("com.sun.star.text.TextEmbeddedObject"));
 
                 if ( xTextContent != null )
                 {
-                    XPropertySet xPropSet = (XPropertySet)UnoRuntime.queryInterface(
+                    XPropertySet xPropSet = UnoRuntime.queryInterface(
                         XPropertySet.class, xTextContent);
 
                     Any aAny = new Any(String.class, msChartClassID);
                     xPropSet.setPropertyValue("CLSID", aAny );
 
-                    XTextDocument xTextDoc = (XTextDocument)
-                        UnoRuntime.queryInterface(XTextDocument.class,
-                                                  maContainerDocument);
+                    XTextDocument xTextDoc = UnoRuntime.queryInterface(XTextDocument.class,
+                                              maContainerDocument);
                     XText xText = xTextDoc.getText();
                     XTextCursor xCursor = xText.createTextCursor();
 
@@ -104,7 +102,7 @@ public class ChartHelper
                     xText.insertTextContent( xCursor, xTextContent, true );
 
                     // set size and position
-                    XShape xShape = (XShape)UnoRuntime.queryInterface(
+                    XShape xShape = UnoRuntime.queryInterface(
                         XShape.class, xTextContent);
                     xShape.setSize( aExtent );
 
@@ -120,18 +118,18 @@ public class ChartHelper
                     xPropSet.setPropertyValue("HoriOrientPosition", aAny );
 
                     // retrieve the chart document as model of the OLE shape
-                    aResult = (XChartDocument) UnoRuntime.queryInterface(
+                    aResult = UnoRuntime.queryInterface(
                             XChartDocument.class,
                             xPropSet.getPropertyValue( "Model" ));
 
                     // create a diagram via the factory and set this as
                     // new diagram
                     aResult.setDiagram(
-                        (XDiagram) UnoRuntime.queryInterface(
+                        UnoRuntime.queryInterface(
                             XDiagram.class,
-                            ((XMultiServiceFactory) UnoRuntime.queryInterface(
+                            UnoRuntime.queryInterface(
                                 XMultiServiceFactory.class,
-                                aResult )).createInstance(sChartServiceName )));
+                                aResult ).createInstance(sChartServiceName )));
                 }
             } catch( Exception ex)
             {
@@ -153,16 +151,15 @@ public class ChartHelper
         XShapes aPage = null;
 
         // try interface for multiple pages in a document
-        XDrawPagesSupplier aSupplier = (XDrawPagesSupplier)
-            UnoRuntime.queryInterface(XDrawPagesSupplier.class,
-                                      maContainerDocument );
+        XDrawPagesSupplier aSupplier = UnoRuntime.queryInterface(XDrawPagesSupplier.class,
+                                  maContainerDocument );
 
         if( aSupplier != null )
         {
             try
             {
                 // get first page
-                aPage = (XShapes) UnoRuntime.queryInterface(
+                aPage = UnoRuntime.queryInterface(
                     XShapes.class, aSupplier.getDrawPages().getByIndex( 0 ) );
             }
             catch( Exception ex )
@@ -174,29 +171,27 @@ public class ChartHelper
         else
         {
             // try interface for single draw page (e.g. spreadsheet)
-            XDrawPageSupplier aOnePageSupplier = (XDrawPageSupplier)
-                UnoRuntime.queryInterface(XDrawPageSupplier.class,
-                                          maContainerDocument );
+            XDrawPageSupplier aOnePageSupplier = UnoRuntime.queryInterface(XDrawPageSupplier.class,
+                                      maContainerDocument );
 
             if( aOnePageSupplier != null )
             {
-                aPage = (XShapes) UnoRuntime.queryInterface(
+                aPage = UnoRuntime.queryInterface(
                     XShapes.class, aOnePageSupplier.getDrawPage());
             }
         }
 
         if( aPage != null )
         {
-            XMultiServiceFactory aFact = (XMultiServiceFactory)
-                UnoRuntime.queryInterface(XMultiServiceFactory.class,
-                                          maContainerDocument );
+            XMultiServiceFactory aFact = UnoRuntime.queryInterface(XMultiServiceFactory.class,
+                                      maContainerDocument );
 
             if( aFact != null )
             {
                 try
                 {
                     // create an OLE shape
-                    XShape aShape = (XShape) UnoRuntime.queryInterface(
+                    XShape aShape = UnoRuntime.queryInterface(
                         XShape.class,
                         aFact.createInstance( "com.sun.star.drawing.OLE2Shape" ));
 
@@ -206,26 +201,25 @@ public class ChartHelper
                     aShape.setSize( aExtent );
 
                     // make the OLE shape a chart
-                    XPropertySet aShapeProp = (XPropertySet)
-                        UnoRuntime.queryInterface(XPropertySet.class, aShape );
+                    XPropertySet aShapeProp = UnoRuntime.queryInterface(XPropertySet.class, aShape );
                     if( aShapeProp != null )
                     {
                         // set the class id for charts
                         aShapeProp.setPropertyValue( "CLSID", msChartClassID );
 
                         // retrieve the chart document as model of the OLE shape
-                        aResult = (XChartDocument) UnoRuntime.queryInterface(
+                        aResult = UnoRuntime.queryInterface(
                             XChartDocument.class,
                             aShapeProp.getPropertyValue( "Model" ));
 
                         // create a diagram via the factory and set this as
                         // new diagram
                         aResult.setDiagram(
-                            (XDiagram) UnoRuntime.queryInterface(
+                            UnoRuntime.queryInterface(
                                 XDiagram.class,
-                                ((XMultiServiceFactory) UnoRuntime.queryInterface(
+                                UnoRuntime.queryInterface(
                                     XMultiServiceFactory.class,
-                                    aResult )).createInstance(sChartServiceName )));
+                                    aResult ).createInstance(sChartServiceName )));
                     }
                 }
                 catch( Exception ex )
diff --git a/odk/examples/DevelopersGuide/Charts/ChartInCalc.java b/odk/examples/DevelopersGuide/Charts/ChartInCalc.java
index f5e4b116ac7d..62042b95b5b7 100644
--- a/odk/examples/DevelopersGuide/Charts/ChartInCalc.java
+++ b/odk/examples/DevelopersGuide/Charts/ChartInCalc.java
@@ -80,8 +80,8 @@ public class ChartInCalc
 
         // insert a cell range with 4 columns and 24 rows filled with random numbers
         XCellRange aRange = aCalcHelper.insertRandomRange( 4, 24 );
-        CellRangeAddress aRangeAddress = ((XCellRangeAddressable) UnoRuntime.queryInterface(
-            XCellRangeAddressable.class, aRange)).getRangeAddress();
+        CellRangeAddress aRangeAddress = UnoRuntime.queryInterface(
+            XCellRangeAddressable.class, aRange).getRangeAddress();
 
         // change view to sheet containing the chart
         aCalcHelper.raiseChartSheet();
@@ -150,7 +150,7 @@ public class ChartInCalc
     public void lockControllers()
         throws RuntimeException
     {
-        ((XModel) UnoRuntime.queryInterface( XModel.class, maChartDocument )).lockControllers();
+        UnoRuntime.queryInterface( XModel.class, maChartDocument ).lockControllers();
     }
 
     // ____________________
@@ -158,7 +158,7 @@ public class ChartInCalc
     public void unlockControllers()
         throws RuntimeException
     {
-        ((XModel) UnoRuntime.queryInterface( XModel.class, maChartDocument )).unlockControllers();
+        UnoRuntime.queryInterface( XModel.class, maChartDocument ).unlockControllers();
     }
 
     // ____________________
@@ -167,7 +167,7 @@ public class ChartInCalc
         throws RuntimeException, UnknownPropertyException, PropertyVetoException,
                com.sun.star.lang.IllegalArgumentException, WrappedTargetException
     {
-        XPropertySet aDiaProp = (XPropertySet) UnoRuntime.queryInterface( XPropertySet.class, maDiagram );
+        XPropertySet aDiaProp = UnoRuntime.queryInterface( XPropertySet.class, maDiagram );
 
         if( aDiaProp != null )
         {
@@ -237,7 +237,7 @@ public class ChartInCalc
             // determine the maximum value of the first series
             int nMaxIndex = 0;
 
-            XChartDataArray aDataArray = (XChartDataArray) UnoRuntime.queryInterface(
+            XChartDataArray aDataArray = UnoRuntime.queryInterface(
                 XChartDataArray.class, maChartDocument.getData());
             double aData[][] = aDataArray.getData();
 
@@ -293,8 +293,8 @@ public class ChartInCalc
         throws RuntimeException, UnknownPropertyException, PropertyVetoException,
                com.sun.star.lang.IllegalArgumentException, WrappedTargetException
     {
-        XPropertySet aWall = ((X3DDisplay) UnoRuntime.queryInterface(
-                                  X3DDisplay.class, maDiagram )).getWall();
+        XPropertySet aWall = UnoRuntime.queryInterface(
+                                  X3DDisplay.class, maDiagram ).getWall();
 
         // change background color of area
         aWall.setPropertyValue( "FillStyle", FillStyle.SOLID );
@@ -308,12 +308,12 @@ public class ChartInCalc
                com.sun.star.lang.IllegalArgumentException, WrappedTargetException
     {
         // change main title
-        XPropertySet aDocProp = (XPropertySet) UnoRuntime.queryInterface(
+        XPropertySet aDocProp = UnoRuntime.queryInterface(
             XPropertySet.class, maChartDocument );
         aDocProp.setPropertyValue( "HasMainTitle", new Boolean( true ));
 
         XShape aTitle = maChartDocument.getTitle();
-        XPropertySet aTitleProp = (XPropertySet) UnoRuntime.queryInterface( XPropertySet.class, aTitle );
+        XPropertySet aTitleProp = UnoRuntime.queryInterface( XPropertySet.class, aTitle );
 
         // set new text
         if( aTitleProp != null )
@@ -323,9 +323,9 @@ public class ChartInCalc
         }
 
         // align title with y axis
-        XShape aAxis = (XShape) UnoRuntime.queryInterface(
-            XShape.class, ((XAxisYSupplier) UnoRuntime.queryInterface(
-                XAxisYSupplier.class, maDiagram )).getYAxis() );
+        XShape aAxis = UnoRuntime.queryInterface(
+            XShape.class, UnoRuntime.queryInterface(
+                XAxisYSupplier.class, maDiagram ).getYAxis() );
 
         if( aAxis != null &&
             aTitle != null )
@@ -344,8 +344,8 @@ public class ChartInCalc
                MalformedNumberFormatException
     {
         // x axis
-        XPropertySet aAxisProp = ((XAxisXSupplier) UnoRuntime.queryInterface(
-                                      XAxisXSupplier.class, maDiagram )).getXAxis();
+        XPropertySet aAxisProp = UnoRuntime.queryInterface(
+                                      XAxisXSupplier.class, maDiagram ).getXAxis();
         if( aAxisProp != null )
         {
             aAxisProp.setPropertyValue( "Max",      new Integer( 24 ));
@@ -353,12 +353,12 @@ public class ChartInCalc
         }
 
         // change number format for y axis
-        aAxisProp = ((XAxisYSupplier) UnoRuntime.queryInterface(
-                         XAxisYSupplier.class, maDiagram )).getYAxis();
+        aAxisProp = UnoRuntime.queryInterface(
+                         XAxisYSupplier.class, maDiagram ).getYAxis();
 
         // add a new custom number format and get the new key
         int nNewNumberFormat = 0;
-        XNumberFormatsSupplier aNumFmtSupp = (XNumberFormatsSupplier) UnoRuntime.queryInterface(
+        XNumberFormatsSupplier aNumFmtSupp = UnoRuntime.queryInterface(
             XNumberFormatsSupplier.class, maChartDocument );
 
         if( aNumFmtSupp != null )
@@ -383,10 +383,10 @@ public class ChartInCalc
                com.sun.star.lang.IllegalArgumentException, WrappedTargetException
     {
         // y major grid
-        XPropertySet aGridProp = (XPropertySet) UnoRuntime.queryInterface(
+        XPropertySet aGridProp = UnoRuntime.queryInterface(
             XPropertySet.class,
-            ( (XAxisYSupplier) UnoRuntime.queryInterface(
-                XAxisYSupplier.class, maDiagram )).getYMainGrid());
+            UnoRuntime.queryInterface(
+                XAxisYSupplier.class, maDiagram ).getYMainGrid());
 
         if( aGridProp != null )
         {
diff --git a/odk/examples/DevelopersGuide/Charts/ChartInDraw.java b/odk/examples/DevelopersGuide/Charts/ChartInDraw.java
index 362c1b731c32..f7fbb2cff263 100644
--- a/odk/examples/DevelopersGuide/Charts/ChartInDraw.java
+++ b/odk/examples/DevelopersGuide/Charts/ChartInDraw.java
@@ -121,7 +121,7 @@ public class ChartInDraw
     public void lockControllers()
         throws RuntimeException
     {
-        ((XModel) UnoRuntime.queryInterface( XModel.class, maChartDocument )).lockControllers();
+        UnoRuntime.queryInterface( XModel.class, maChartDocument ).lockControllers();
     }
 
     // ____________________
@@ -129,7 +129,7 @@ public class ChartInDraw
     public void unlockControllers()
         throws RuntimeException
     {
-        ((XModel) UnoRuntime.queryInterface( XModel.class, maChartDocument )).unlockControllers();
+        UnoRuntime.queryInterface( XModel.class, maChartDocument ).unlockControllers();
     }
 
     // ____________________
@@ -154,8 +154,8 @@ public class ChartInDraw
         throws RuntimeException, UnknownPropertyException, PropertyVetoException,
                com.sun.star.lang.IllegalArgumentException, WrappedTargetException
     {
-        XPropertySet aWall = ((X3DDisplay) UnoRuntime.queryInterface(
-                                  X3DDisplay.class, maDiagram )).getWall();
+        XPropertySet aWall = UnoRuntime.queryInterface(
+                                  X3DDisplay.class, maDiagram ).getWall();
 
         // change background color of area
         aWall.setPropertyValue( "FillColor", new Integer( 0xcccccc ));
@@ -169,12 +169,12 @@ public class ChartInDraw
                com.sun.star.lang.IllegalArgumentException, WrappedTargetException
     {
         // change main title
-        XPropertySet aDocProp = (XPropertySet) UnoRuntime.queryInterface(
+        XPropertySet aDocProp = UnoRuntime.queryInterface(
             XPropertySet.class, maChartDocument );
         aDocProp.setPropertyValue( "HasMainTitle", new Boolean( true ));
 
         XShape aTitle = maChartDocument.getTitle();
-        XPropertySet aTitleProp = (XPropertySet) UnoRuntime.queryInterface( XPropertySet.class, aTitle );
+        XPropertySet aTitleProp = UnoRuntime.queryInterface( XPropertySet.class, aTitle );
 
         // set new text
         if( aTitleProp != null )
@@ -190,7 +190,7 @@ public class ChartInDraw
                com.sun.star.lang.IllegalArgumentException, WrappedTargetException
     {
         XShape aLegend = maChartDocument.getLegend();
-        XPropertySet aLegendProp = (XPropertySet) UnoRuntime.queryInterface( XPropertySet.class, aLegend );
+        XPropertySet aLegendProp = UnoRuntime.queryInterface( XPropertySet.class, aLegend );
 
         aLegendProp.setPropertyValue( "Alignment", ChartLegendPosition.LEFT );
         aLegendProp.setPropertyValue( "FillStyle", FillStyle.SOLID );
@@ -204,7 +204,7 @@ public class ChartInDraw
         com.sun.star.lang.IllegalArgumentException, WrappedTargetException,
         com.sun.star.lang.IndexOutOfBoundsException
     {
-        XPropertySet aDiaProp = (XPropertySet) UnoRuntime.queryInterface( XPropertySet.class, maDiagram );
+        XPropertySet aDiaProp = UnoRuntime.queryInterface( XPropertySet.class, maDiagram );
         Boolean aTrue = new Boolean( true );
 
         aDiaProp.setPropertyValue( "Dim3D", aTrue );
@@ -213,8 +213,8 @@ public class ChartInDraw
         aDiaProp.setPropertyValue( "SolidType", new Integer( ChartSolidType.CYLINDER ));
 
         // change floor color to Magenta6
-        XPropertySet aFloor = ((X3DDisplay) UnoRuntime.queryInterface(
-                                   X3DDisplay.class, maDiagram )).getFloor();
+        XPropertySet aFloor = UnoRuntime.queryInterface(
+                                   X3DDisplay.class, maDiagram ).getFloor();
         aFloor.setPropertyValue( "FillColor", new Integer( 0x6b2394 ));
 
         // apply changes to get a 3d scene
diff --git a/odk/examples/DevelopersGuide/Charts/ChartInWriter.java b/odk/examples/DevelopersGuide/Charts/ChartInWriter.java
index 30ff75a7e060..6506cb92f32e 100644
--- a/odk/examples/DevelopersGuide/Charts/ChartInWriter.java
+++ b/odk/examples/DevelopersGuide/Charts/ChartInWriter.java
@@ -73,7 +73,7 @@ public class ChartInWriter
         Helper aHelper = new Helper( args );
 
         ChartHelper aChartHelper = new ChartHelper(
-            (XModel) UnoRuntime.queryInterface( XModel.class,
+            UnoRuntime.queryInterface( XModel.class,
                                                 aHelper.createTextDocument()));
 
         // the unit for measures is 1/100th of a millimeter
@@ -126,7 +126,7 @@ public class ChartInWriter
     public void lockControllers()
         throws RuntimeException
     {
-        ((XModel) UnoRuntime.queryInterface( XModel.class, maChartDocument )).lockControllers();
+        UnoRuntime.queryInterface( XModel.class, maChartDocument ).lockControllers();
     }
 
     // ____________________
@@ -134,7 +134,7 @@ public class ChartInWriter
     public void unlockControllers()
         throws RuntimeException
     {
-        ((XModel) UnoRuntime.queryInterface( XModel.class, maChartDocument )).unlockControllers();
+        UnoRuntime.queryInterface( XModel.class, maChartDocument ).unlockControllers();
     }
 
     // ____________________
@@ -143,8 +143,8 @@ public class ChartInWriter
         throws RuntimeException, UnknownPropertyException, PropertyVetoException,
                com.sun.star.lang.IllegalArgumentException, WrappedTargetException
     {
-        XPropertySet aWall = ((X3DDisplay) UnoRuntime.queryInterface(
-                                  X3DDisplay.class, maDiagram )).getWall();
+        XPropertySet aWall = UnoRuntime.queryInterface(
+                                  X3DDisplay.class, maDiagram ).getWall();
 
         // change background color of area
         aWall.setPropertyValue( "FillColor", new Integer( 0xeecc99 ));
diff --git a/odk/examples/DevelopersGuide/Charts/Helper.java b/odk/examples/DevelopersGuide/Charts/Helper.java
index 6c7e2c316030..92ba8c476474 100644
--- a/odk/examples/DevelopersGuide/Charts/Helper.java
+++ b/odk/examples/DevelopersGuide/Charts/Helper.java
@@ -75,7 +75,7 @@ public class Helper
 
     public XSpreadsheetDocument createSpreadsheetDocument()
     {
-        return (XSpreadsheetDocument) UnoRuntime.queryInterface(
+        return UnoRuntime.queryInterface(
             XSpreadsheetDocument.class, createDocument( "scalc" ));
     }
 
@@ -107,12 +107,11 @@ public class Helper
         XModel aResult = null;
         try
         {
-            XComponentLoader aLoader = (XComponentLoader)
-                UnoRuntime.queryInterface(XComponentLoader.class,
-                maMCFactory.createInstanceWithContext("com.sun.star.frame.Desktop",
-                                                      maContext) );
+            XComponentLoader aLoader = UnoRuntime.queryInterface(XComponentLoader.class,
+            maMCFactory.createInstanceWithContext("com.sun.star.frame.Desktop",
+                                                  maContext) );
 
-            aResult = (XModel) UnoRuntime.queryInterface(
+            aResult = UnoRuntime.queryInterface(
                 XModel.class,
                 aLoader.loadComponentFromURL( "private:factory/" + sDocType,
                                               "_blank",
diff --git a/odk/examples/DevelopersGuide/Charts/JavaSampleChartAddIn.java b/odk/examples/DevelopersGuide/Charts/JavaSampleChartAddIn.java
index 3ddb9d814fd3..4a8b1ec46b12 100644
--- a/odk/examples/DevelopersGuide/Charts/JavaSampleChartAddIn.java
+++ b/odk/examples/DevelopersGuide/Charts/JavaSampleChartAddIn.java
@@ -80,10 +80,10 @@ public class JavaSampleChartAddIn extends WeakBase implements
     {
         if( aArguments.length > 0 )
         {
-            maChartDocument = (XChartDocument) UnoRuntime.queryInterface(
+            maChartDocument = UnoRuntime.queryInterface(
                 XChartDocument.class, aArguments[ 0 ]);
 
-            XPropertySet aDocProp = (XPropertySet) UnoRuntime.queryInterface(
+            XPropertySet aDocProp = UnoRuntime.queryInterface(
                 XPropertySet.class, maChartDocument );
             if( aDocProp != null )
             {
@@ -92,14 +92,14 @@ public class JavaSampleChartAddIn extends WeakBase implements
             }
 
             // get the draw page
-            XDrawPageSupplier aPageSupp = (XDrawPageSupplier) UnoRuntime.queryInterface(
+            XDrawPageSupplier aPageSupp = UnoRuntime.queryInterface(
                 XDrawPageSupplier.class, maChartDocument );
             if( aPageSupp != null )
-                maDrawPage = (XDrawPage) UnoRuntime.queryInterface(
+                maDrawPage = UnoRuntime.queryInterface(
                     XDrawPage.class, aPageSupp.getDrawPage() );
 
             // get a factory for creating shapes
-            maShapeFactory = (XMultiServiceFactory) UnoRuntime.queryInterface(
+            maShapeFactory = UnoRuntime.queryInterface(
                 XMultiServiceFactory.class, maChartDocument );
         }
     }
@@ -112,13 +112,13 @@ public class JavaSampleChartAddIn extends WeakBase implements
             maTopLine == null )
         {
             // try to recycle loaded shapes
-            XPropertySet aDocProp = (XPropertySet) UnoRuntime.queryInterface(
+            XPropertySet aDocProp = UnoRuntime.queryInterface(
                 XPropertySet.class, maChartDocument );
             if( aDocProp != null )
             {
                 try
                 {
-                    XIndexAccess aShapesIA = (XIndexAccess) UnoRuntime.queryInterface(
+                    XIndexAccess aShapesIA = UnoRuntime.queryInterface(
                         XIndexAccess.class, aDocProp.getPropertyValue( "AdditionalShapes" ));
                     if( aShapesIA != null &&
                         aShapesIA.getCount() > 0 )
@@ -127,11 +127,11 @@ public class JavaSampleChartAddIn extends WeakBase implements
                         String aName;
                         for( int i = aShapesIA.getCount() - 1; i >= 0; --i )
                         {
-                            aShape = (XShape) UnoRuntime.queryInterface(
+                            aShape = UnoRuntime.queryInterface(
                                 XShape.class, aShapesIA.getByIndex( i ));
                             if( aShape != null )
                             {
-                                XPropertySet aProp = (XPropertySet) UnoRuntime.queryInterface(
+                                XPropertySet aProp = UnoRuntime.queryInterface(
                                     XPropertySet.class, aShape );
                                 aName = (String) aProp.getPropertyValue( "Name" );
 
@@ -159,12 +159,12 @@ public class JavaSampleChartAddIn extends WeakBase implements
         {
             if( maTopLine == null )
             {
-                maTopLine = (XShape) UnoRuntime.queryInterface(
+                maTopLine = UnoRuntime.queryInterface(
                     XShape.class, maShapeFactory.createInstance( "com.sun.star.drawing.LineShape" ));
                 maDrawPage.add( maTopLine );
 
                 // make line red and thicker
-                XPropertySet aShapeProp = (XPropertySet) UnoRuntime.queryInterface(
+                XPropertySet aShapeProp = UnoRuntime.queryInterface(
                     XPropertySet.class, maTopLine );
 
                 aShapeProp.setPropertyValue( "LineColor", new Integer( 0xe01010 ));
@@ -182,12 +182,12 @@ public class JavaSampleChartAddIn extends WeakBase implements
         {
             if( maBottomLine == null )
             {
-                maBottomLine = (XShape) UnoRuntime.queryInterface(
+                maBottomLine = UnoRuntime.queryInterface(
                     XShape.class, maShapeFactory.createInstance( "com.sun.star.drawing.LineShape" ));
                 maDrawPage.add( maBottomLine );
 
                 // make line green and thicker
-                XPropertySet aShapeProp = (XPropertySet) UnoRuntime.queryInterface(
+                XPropertySet aShapeProp = UnoRuntime.queryInterface(
                     XPropertySet.class, maBottomLine );
 
                 aShapeProp.setPropertyValue( "LineColor", new Integer( 0x10e010 ));
@@ -211,18 +211,18 @@ public class JavaSampleChartAddIn extends WeakBase implements
         // --------------
 
         // get data
-        XChartDataArray aDataArray = (XChartDataArray) UnoRuntime.queryInterface(
+        XChartDataArray aDataArray = UnoRuntime.queryInterface(
             XChartDataArray.class, maChartDocument.getData());
         double aData[][] = aDataArray.getData();
 
         // get axes
         XDiagram aDiagram = maChartDocument.getDiagram();
-        XShape aXAxis = (XShape) UnoRuntime.queryInterface(
-            XShape.class, ((XAxisXSupplier) UnoRuntime.queryInterface(
-                               XAxisXSupplier.class, aDiagram )).getXAxis() );
-        XShape aYAxis = (XShape) UnoRuntime.queryInterface(
-            XShape.class, ((XAxisYSupplier) UnoRuntime.queryInterface(
-                               XAxisYSupplier.class, aDiagram )).getYAxis() );
+        XShape aXAxis = UnoRuntime.queryInterface(
+            XShape.class, UnoRuntime.queryInterface(
+                               XAxisXSupplier.class, aDiagram ).getXAxis() );
+        XShape aYAxis = UnoRuntime.queryInterface(
+            XShape.class, UnoRuntime.queryInterface(
+                               XAxisYSupplier.class, aDiagram ).getYAxis() );
 
         // calculate points for hull
         final int nLength = aData.length;
@@ -253,11 +253,11 @@ public class JavaSampleChartAddIn extends WeakBase implements
         // apply point sequences to lines
         try
         {
-            XPropertySet aShapeProp = (XPropertySet) UnoRuntime.queryInterface(
+            XPropertySet aShapeProp = UnoRuntime.queryInterface(
                 XPropertySet.class, maTopLine );
             aShapeProp.setPropertyValue( "PolyPolygon", aMaxPtSeq );
 
-            aShapeProp = (XPropertySet) UnoRuntime.queryInterface(
+            aShapeProp = UnoRuntime.queryInterface(
                 XPropertySet.class, maBottomLine );
             aShapeProp.setPropertyValue( "PolyPolygon", aMinPtSeq );
         }
@@ -330,20 +330,20 @@ public class JavaSampleChartAddIn extends WeakBase implements
     // XShape : XDiagram
     public Size getSize() throws RuntimeException
     {
-        return ((XShape) UnoRuntime.queryInterface( XShape.class, maChartDocument.getDiagram())).getSize();
+        return UnoRuntime.queryInterface( XShape.class, maChartDocument.getDiagram()).getSize();
     }
     public void setSize( Size aSize ) throws RuntimeException, PropertyVetoException
     {
-        ((XShape) UnoRuntime.queryInterface( XShape.class, maChartDocument.getDiagram())).setSize( aSize );
+        UnoRuntime.queryInterface( XShape.class, maChartDocument.getDiagram()).setSize( aSize );
     }
 
     public Point getPosition() throws RuntimeException
     {
-        return ((XShape) UnoRuntime.queryInterface( XShape.class, maChartDocument.getDiagram())).getPosition();
+        return UnoRuntime.queryInterface( XShape.class, maChartDocument.getDiagram()).getPosition();
     }
     public void setPosition( Point aPos ) throws RuntimeException
     {
-        ((XShape) UnoRuntime.queryInterface( XShape.class, maChartDocument.getDiagram())).setPosition( aPos );
+        UnoRuntime.queryInterface( XShape.class, maChartDocument.getDiagram()).setPosition( aPos );
     }
 
     // XShapeDescriptor : XShape : XDiagram
@@ -370,7 +370,7 @@ public class JavaSampleChartAddIn extends WeakBase implements
 
         if( aAxis != null )
         {
-            XPropertySet aAxisProp = (XPropertySet) UnoRuntime.queryInterface(
+            XPropertySet aAxisProp = UnoRuntime.queryInterface(
                 XPropertySet.class, aAxis );
 
             try
@@ -386,13 +386,13 @@ public class JavaSampleChartAddIn extends WeakBase implements
                     if( bVertical )
                     {
                         nResult = aAxis.getPosition().Y +
-                            (int)((double)(aAxis.getSize().Height) *
+                            (int)((aAxis.getSize().Height) *
                                   (1.0 - (( fValue - fMin ) / fRange )));
                     }
                     else
                     {
                         nResult = aAxis.getPosition().X +
-                            (int)((double)(aAxis.getSize().Width) *
+                            (int)((aAxis.getSize().Width) *
                                   (( fValue - fMin ) / fRange ));
                     }
                 }
diff --git a/odk/examples/DevelopersGuide/Charts/ListenAtCalcRangeInDraw.java b/odk/examples/DevelopersGuide/Charts/ListenAtCalcRangeInDraw.java
index 27cf351be271..266f07a9c728 100644
--- a/odk/examples/DevelopersGuide/Charts/ListenAtCalcRangeInDraw.java
+++ b/odk/examples/DevelopersGuide/Charts/ListenAtCalcRangeInDraw.java
@@ -95,7 +95,7 @@ public class ListenAtCalcRangeInDraw implements XChartDataChangeEventListener
             "com.sun.star.chart.XYDiagram" );
 
         // attach the data coming from the cell range to the chart
-        maChartData = (XChartData) UnoRuntime.queryInterface( XChartData.class, aRange );
+        maChartData = UnoRuntime.queryInterface( XChartData.class, aRange );
         maChartDocument.attachData( maChartData );
     }
 
@@ -105,17 +105,17 @@ public class ListenAtCalcRangeInDraw implements XChartDataChangeEventListener
     {
         try
         {
-            ((XPropertySet) UnoRuntime.queryInterface(
-                XPropertySet.class, maChartDocument )).setPropertyValue(
+            UnoRuntime.queryInterface(
+                XPropertySet.class, maChartDocument ).setPropertyValue(
                 "HasSubTitle", new Boolean( true ));
 
             // start listening for death of spreadsheet
-            ((XComponent) UnoRuntime.queryInterface(
-                XComponent.class, maSheetDoc )).addEventListener( this );
+            UnoRuntime.queryInterface(
+                XComponent.class, maSheetDoc ).addEventListener( this );
 
             // start listening for death of chart
-            ((XComponent) UnoRuntime.queryInterface(
-                XComponent.class, maChartDocument )).addEventListener( this );
+            UnoRuntime.queryInterface(
+                XComponent.class, maChartDocument ).addEventListener( this );
 
             //start listening for change of data
             maChartData.addChartDataChangeEventListener( this );
@@ -146,10 +146,10 @@ public class ListenAtCalcRangeInDraw implements XChartDataChangeEventListener
         maChartData.removeChartDataChangeEventListener( this );
 
         // remove dispose listeners
-        ((XComponent) UnoRuntime.queryInterface(
-            XComponent.class, maSheetDoc )).removeEventListener( this );
-        ((XComponent) UnoRuntime.queryInterface(
-            XComponent.class, maChartDocument )).removeEventListener( this );
+        UnoRuntime.queryInterface(
+            XComponent.class, maSheetDoc ).removeEventListener( this );
+        UnoRuntime.queryInterface(
+            XComponent.class, maChartDocument ).removeEventListener( this );
 
         System.exit( 0 );
     }
@@ -164,12 +164,12 @@ public class ListenAtCalcRangeInDraw implements XChartDataChangeEventListener
 
         try
         {
-            XPropertySet aDocProp = (XPropertySet) UnoRuntime.queryInterface(
+            XPropertySet aDocProp = UnoRuntime.queryInterface(
                 XPropertySet.class, maChartDocument );
             aDocProp.setPropertyValue( "HasMainTitle", new Boolean( true ));
 
-            ((XPropertySet) UnoRuntime.queryInterface(
-                XPropertySet.class, maChartDocument.getSubTitle())).setPropertyValue(
+            UnoRuntime.queryInterface(
+                XPropertySet.class, maChartDocument.getSubTitle()).setPropertyValue(
                 "String", aTitle );
 
             maChartDocument.attachData( maChartData );
diff --git a/odk/examples/DevelopersGuide/Charts/SelectionChangeListener.java b/odk/examples/DevelopersGuide/Charts/SelectionChangeListener.java
index 0f55fd1ddf00..5c10a0f55433 100644
--- a/odk/examples/DevelopersGuide/Charts/SelectionChangeListener.java
+++ b/odk/examples/DevelopersGuide/Charts/SelectionChangeListener.java
@@ -83,8 +83,8 @@ public class SelectionChangeListener implements XSelectionChangeListener {
 
         // insert a cell range with 4 columns and 12 rows filled with random numbers
         XCellRange aRange = aCalcHelper.insertRandomRange( 4, 12 );
-        CellRangeAddress aRangeAddress = ((XCellRangeAddressable) UnoRuntime.queryInterface(
-            XCellRangeAddressable.class, aRange)).getRangeAddress();
+        CellRangeAddress aRangeAddress = UnoRuntime.queryInterface(
+            XCellRangeAddressable.class, aRange).getRangeAddress();
 
         // change view to sheet containing the chart
         aCalcHelper.raiseChartSheet();
@@ -113,10 +113,10 @@ public class SelectionChangeListener implements XSelectionChangeListener {
 
         while( bTrying ) {
             // start listening for selection changes
-            XSelectionSupplier aSelSupp = (XSelectionSupplier) UnoRuntime.queryInterface(
+            XSelectionSupplier aSelSupp = UnoRuntime.queryInterface(
                 XSelectionSupplier.class,
-                (((XModel) UnoRuntime.queryInterface(
-                XModel.class, maChartDocument )).getCurrentController()) );
+                (UnoRuntime.queryInterface(
+                XModel.class, maChartDocument ).getCurrentController()) );
             if( aSelSupp != null ) {
                 aSelSupp.addSelectionChangeListener( this );
                 System.out.println( "Successfully attached as selection change listener" );
@@ -124,7 +124,7 @@ public class SelectionChangeListener implements XSelectionChangeListener {
             }
 
             // start listening for death of Controller
-            XComponent aComp = (XComponent) UnoRuntime.queryInterface( XComponent.class, aSelSupp );
+            XComponent aComp = UnoRuntime.queryInterface( XComponent.class, aSelSupp );
             if( aComp != null ) {
                 aComp.addEventListener( this );
                 System.out.println( "Successfully attached as dispose listener" );
@@ -144,13 +144,13 @@ public class SelectionChangeListener implements XSelectionChangeListener {
         System.out.println( "disposing called.  detaching as listener" );
 
         // stop listening for selection changes
-        XSelectionSupplier aCtrl = (XSelectionSupplier) UnoRuntime.queryInterface(
+        XSelectionSupplier aCtrl = UnoRuntime.queryInterface(
             XSelectionSupplier.class, aSourceObj );
         if( aCtrl != null )
             aCtrl.removeSelectionChangeListener( this );
 
         // remove as dispose listener
-        XComponent aComp = (XComponent) UnoRuntime.queryInterface( XComponent.class, aSourceObj );
+        XComponent aComp = UnoRuntime.queryInterface( XComponent.class, aSourceObj );
         if( aComp != null )
             aComp.removeEventListener( this );
 
@@ -162,7 +162,7 @@ public class SelectionChangeListener implements XSelectionChangeListener {
 
     // XSelectionChangeListener
     public void selectionChanged( EventObject aEvent ) {
-        XController aCtrl = (XController) UnoRuntime.queryInterface( XController.class, aEvent.Source );
+        XController aCtrl = UnoRuntime.queryInterface( XController.class, aEvent.Source );
         if( aCtrl != null ) {
             XMultiComponentFactory mMCF = maContext.getServiceManager();
 
@@ -195,18 +195,18 @@ public class SelectionChangeListener implements XSelectionChangeListener {
                 Object oDesktop = mMCF.createInstanceWithContext("com.sun.star.frame.Desktop", maContext);
                 Object oToolKit = mMCF.createInstanceWithContext("com.sun.star.awt.Toolkit", maContext);
 
-                aDesktop = (XDesktop) UnoRuntime.queryInterface(XDesktop.class, oDesktop);
-                aToolKit = (XInterface) UnoRuntime.queryInterface(XInterface.class, oToolKit);
+                aDesktop = UnoRuntime.queryInterface(XDesktop.class, oDesktop);
+                aToolKit = UnoRuntime.queryInterface(XInterface.class, oToolKit);
             } catch (Exception ex) {
                 ex.printStackTrace();
             }
 
             XWindow xWin = aDesktop.getCurrentFrame().getContainerWindow();
-            XWindowPeer aWinPeer = (XWindowPeer) UnoRuntime.queryInterface(XWindowPeer.class, xWin);
+            XWindowPeer aWinPeer = UnoRuntime.queryInterface(XWindowPeer.class, xWin);
 
             Rectangle aRect = new Rectangle();
             int button = com.sun.star.awt.MessageBoxButtons.BUTTONS_OK;
-            XMessageBoxFactory aMBF = (XMessageBoxFactory) UnoRuntime.queryInterface(XMessageBoxFactory.class, aToolKit);
+            XMessageBoxFactory aMBF = UnoRuntime.queryInterface(XMessageBoxFactory.class, aToolKit);
             XMessageBox xMB = aMBF.createMessageBox(aWinPeer, aRect, "infobox" , button, "Event-Notify", "Listener was called, selcetion has changed");
             xMB.execute();
         }
diff --git a/odk/examples/DevelopersGuide/Components/Addons/JobsAddon/AsyncJob.java b/odk/examples/DevelopersGuide/Components/Addons/JobsAddon/AsyncJob.java
index 260ac5597e9e..a0d5142563e1 100644
--- a/odk/examples/DevelopersGuide/Components/Addons/JobsAddon/AsyncJob.java
+++ b/odk/examples/DevelopersGuide/Components/Addons/JobsAddon/AsyncJob.java
@@ -253,7 +253,7 @@ public class AsyncJob extends    WeakBase implements XServiceInfo, XAsyncJob
         try
         {
             // get access to the office toolkit environment
-            com.sun.star.awt.XToolkit xKit = (com.sun.star.awt.XToolkit)UnoRuntime.queryInterface(
+            com.sun.star.awt.XToolkit xKit = UnoRuntime.queryInterface(
                  com.sun.star.awt.XToolkit.class,
                  m_xCmpCtx.getServiceManager().createInstanceWithContext("com.sun.star.awt.Toolkit",
                                                                          m_xCmpCtx));
@@ -267,13 +267,13 @@ public class AsyncJob extends    WeakBase implements XServiceInfo, XAsyncJob
                                             com.sun.star.awt.WindowAttribute.CLOSEABLE;
             aDescriptor.Type              = com.sun.star.awt.WindowClass.MODALTOP;
             aDescriptor.ParentIndex       = 1;
-            aDescriptor.Parent            = (com.sun.star.awt.XWindowPeer)UnoRuntime.queryInterface(
+            aDescriptor.Parent            = UnoRuntime.queryInterface(
                                                 com.sun.star.awt.XWindowPeer.class,
                                                 xParent);
 
             // create the info box window
             com.sun.star.awt.XWindowPeer xPeer    = xKit.createWindow(aDescriptor);
-            com.sun.star.awt.XMessageBox xInfoBox = (com.sun.star.awt.XMessageBox)UnoRuntime.queryInterface(
+            com.sun.star.awt.XMessageBox xInfoBox = UnoRuntime.queryInterface(
                                                         com.sun.star.awt.XMessageBox.class,
                                                         xPeer);
             if (xInfoBox == null)