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diff --git a/odk/examples/DevelopersGuide/Forms/BooleanValidator.java b/odk/examples/DevelopersGuide/Forms/BooleanValidator.java
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+++ b/odk/examples/DevelopersGuide/Forms/BooleanValidator.java
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+/*************************************************************************
+ *
+ *  The Contents of this file are made available subject to the terms of
+ *  the BSD license.
+ *
+ *  Copyright 2000, 2010 Oracle and/or its affiliates.
+ *  All rights reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions
+ *  are met:
+ *  1. Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *  2. Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *  3. Neither the name of Sun Microsystems, Inc. nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ *  FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ *  COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ *  BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ *  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ *  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+ *  TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ *  USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *************************************************************************/
+
+/**
+ *
+ * @author  fs93730
+ */
+public class BooleanValidator extends ControlValidator
+{
+    private boolean                         m_preventChecked;
+    private com.sun.star.uno.AnyConverter   m_converter;
+
+    /** Creates a new instance of BooleanValidator */
+    public BooleanValidator( boolean preventChecked )
+    {
+        m_preventChecked = preventChecked;
+        m_converter = new com.sun.star.uno.AnyConverter();
+    }
+
+    public String explainInvalid( Object Value )
+    {
+        try
+        {
+            if ( m_converter.isVoid( Value ) )
+                return "'indetermined' is not an allowed state";
+            boolean value = ((Boolean)Value).booleanValue();
+            if ( m_preventChecked && ( value == true ) )
+                return "no no no. Don't check it.";
+        }
+        catch( java.lang.Exception e )
+        {
+            return "ooops. Unknown error";
+        }
+        return "";
+    }
+
+    public boolean isValid( Object Value )
+    {
+        try
+        {
+            if ( m_converter.isVoid( Value ) )
+                return false;
+
+            boolean value = ((Boolean)Value).booleanValue();
+            if ( m_preventChecked && ( value == true ) )
+                return false;
+            return true;
+        }
+        catch( java.lang.Exception e )
+        {
+        }
+        return false;
+    }
+}