FULL PRODUCT VERSION :
java version "1.5.0_06"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-b05)
Java HotSpot(TM) 64-Bit Server VM (build 1.5.0_06-b05, mixed mode

ADDITIONAL OS VERSION INFORMATION :
SUSE10 Pro, AMD64

EXTRA RELEVANT SYSTEM CONFIGURATION :
64 bit jdk 1.5.0_06

A DESCRIPTION OF THE PROBLEM :
Unselecting a JCheckBox button should turn off the check mark.
ButtonGroup has a number of JCheckBox buttons. setSelected(button, false) should turn off the check if the JCheckBox button is selected?

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Compile the two classes and run PanelTest. Select a checkbox and then
push the "Push Me" button. Select the same checkbox again and the checkbox is not unselected.

Relevant lines of code (which I think
should work but do not) are lines 74 - 78 of class PanelTest.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
check mark should be turned off when setSelected(button, false) is executed.
ACTUAL -
the check remains turned on indicating the button is still selected.

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
/*
 * PanelTest.java
 *
 * Created on February 14, 2006, 7:47 AM
 */

package bttongrouptest;

import javax.swing.*;

/**
 *
 * @author chuck
 */
public class PanelTest extends javax.swing.JFrame {

/** Creates new form PanelTest */
public PanelTest() {
initComponents();
}

/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
    // <editor-fold defaultstate="collapsed" desc=" Generated Code
">//GEN-BEGIN:initComponents
    private void initComponents() {
        paneLeft = new javax.swing.JSplitPane();
        paneRignt = new javax.swing.JSplitPane();
        btnPush = new javax.swing.JButton();
        btnMessage = new javax.swing.JButton();
        buttonGroupPanel1 = new bttongrouptest.ButtonGroupPanel();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        btnPush.setText("Push Me");
        btnPush.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                btnPushActionPerformed(evt);
            }
        });

        paneRignt.setLeftComponent(btnPush);

        paneRignt.setRightComponent(btnMessage);

        paneLeft.setRightComponent(paneRignt);

        paneLeft.setLeftComponent(buttonGroupPanel1);

        org.jdesktop.layout.GroupLayout layout = new
org.jdesktop.layout.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .addContainerGap()
                .add(paneLeft,
org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 376, Short.MAX_VALUE)
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(org.jdesktop.layout.GroupLayout.TRAILING,
layout.createSequentialGroup()
                .addContainerGap()
                .add(paneLeft,
org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 276, Short.MAX_VALUE)
                .addContainerGap())
        );
        pack();
    }// </editor-fold>//GEN-END:initComponents

private void btnPushActionPerformed(java.awt.event.ActionEvent evt)
{//GEN-FIRST:event_btnPushActionPerformed
// when you run this class, select one of the checkboxes before pressing
// the "Push Me" button

ButtonGroup btnGroup = buttonGroupPanel1.getButtonGroup();
if(btnGroup == null) System.out.println("the button group is null");
ButtonModel model = btnGroup.getSelection();
if(model == null) System.out.println("the button model is null");
btnGroup.setSelected(model, false);
btnMessage.setText("Now the selected checkbox should be unselected?");
}//GEN-LAST:event_btnPushActionPerformed

/**
* @param args the command line arguments
*/
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new PanelTest().setVisible(true);
}
});
}

    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JButton btnMessage;
    private javax.swing.JButton btnPush;
    private bttongrouptest.ButtonGroupPanel buttonGroupPanel1;
    private javax.swing.JSplitPane paneLeft;
    private javax.swing.JSplitPane paneRignt;
    // End of variables declaration//GEN-END:variables

}



/*
 * ButtonGroupPanel.java
 *
 * Created on February 14, 2006, 7:39 AM
 */

package bttongrouptest;

import javax.swing.*;

/**
 *
 * @author chuck
 */
public class ButtonGroupPanel extends javax.swing.JPanel {

/** Creates new form ButtonGroupPanel */
public ButtonGroupPanel() {
initComponents();
}

public ButtonGroup getButtonGroup() {
return btnGroup;
}
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
    // <editor-fold defaultstate="collapsed" desc=" Generated Code
">//GEN-BEGIN:initComponents
    private void initComponents() {
        btnGroup = new javax.swing.ButtonGroup();
        jCheckBox1 = new javax.swing.JCheckBox();
        jCheckBox2 = new javax.swing.JCheckBox();
        jCheckBox3 = new javax.swing.JCheckBox();
        jCheckBox4 = new javax.swing.JCheckBox();
        jCheckBox5 = new javax.swing.JCheckBox();
        jCheckBox6 = new javax.swing.JCheckBox();
        jCheckBox7 = new javax.swing.JCheckBox();
        jCheckBox8 = new javax.swing.JCheckBox();

        btnGroup.add(jCheckBox1);
        jCheckBox1.setText("jCheckBox1");
        jCheckBox1.setBorder(javax.swing.BorderFactory.createEmptyBorder(0,
0, 0, 0));
        jCheckBox1.setMargin(new java.awt.Insets(0, 0, 0, 0));

        btnGroup.add(jCheckBox2);
        jCheckBox2.setText("jCheckBox2");
        jCheckBox2.setBorder(javax.swing.BorderFactory.createEmptyBorder(0,
0, 0, 0));
        jCheckBox2.setMargin(new java.awt.Insets(0, 0, 0, 0));

        btnGroup.add(jCheckBox3);
        jCheckBox3.setText("jCheckBox3");
        jCheckBox3.setBorder(javax.swing.BorderFactory.createEmptyBorder(0,
0, 0, 0));
        jCheckBox3.setMargin(new java.awt.Insets(0, 0, 0, 0));

        btnGroup.add(jCheckBox4);
        jCheckBox4.setText("jCheckBox4");
        jCheckBox4.setBorder(javax.swing.BorderFactory.createEmptyBorder(0,
0, 0, 0));
        jCheckBox4.setMargin(new java.awt.Insets(0, 0, 0, 0));

        btnGroup.add(jCheckBox5);
        jCheckBox5.setText("jCheckBox5");
        jCheckBox5.setBorder(javax.swing.BorderFactory.createEmptyBorder(0,
0, 0, 0));
        jCheckBox5.setMargin(new java.awt.Insets(0, 0, 0, 0));

        btnGroup.add(jCheckBox6);
        jCheckBox6.setText("jCheckBox6");
        jCheckBox6.setBorder(javax.swing.BorderFactory.createEmptyBorder(0,
0, 0, 0));
        jCheckBox6.setMargin(new java.awt.Insets(0, 0, 0, 0));

        btnGroup.add(jCheckBox7);
        jCheckBox7.setText("jCheckBox7");
        jCheckBox7.setBorder(javax.swing.BorderFactory.createEmptyBorder(0,
0, 0, 0));
        jCheckBox7.setMargin(new java.awt.Insets(0, 0, 0, 0));

        btnGroup.add(jCheckBox8);
        jCheckBox8.setText("jCheckBox8");
        jCheckBox8.setBorder(javax.swing.BorderFactory.createEmptyBorder(0,
0, 0, 0));
        jCheckBox8.setMargin(new java.awt.Insets(0, 0, 0, 0));

        org.jdesktop.layout.GroupLayout layout = new
org.jdesktop.layout.GroupLayout(this);
        this.setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .addContainerGap()
               
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                    .add(jCheckBox1)
                    .add(jCheckBox2)
                    .add(jCheckBox3)
                    .add(jCheckBox4)
                    .add(jCheckBox5)
                    .add(jCheckBox6)
                    .add(jCheckBox7)
                    .add(jCheckBox8))
                .addContainerGap(126, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .addContainerGap()
                .add(jCheckBox1)
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(jCheckBox2)
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(jCheckBox3)
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(jCheckBox4)
                .add(16, 16, 16)
                .add(jCheckBox5)
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(jCheckBox6)
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(jCheckBox7)
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(jCheckBox8)
                .addContainerGap(159, Short.MAX_VALUE))
        );
    }// </editor-fold>//GEN-END:initComponents


    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.ButtonGroup btnGroup;
    private javax.swing.JCheckBox jCheckBox1;
    private javax.swing.JCheckBox jCheckBox2;
    private javax.swing.JCheckBox jCheckBox3;
    private javax.swing.JCheckBox jCheckBox4;
    private javax.swing.JCheckBox jCheckBox5;
    private javax.swing.JCheckBox jCheckBox6;
    private javax.swing.JCheckBox jCheckBox7;
    private javax.swing.JCheckBox jCheckBox8;
    // End of variables declaration//GEN-END:variables

}


---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
ignore the problem but when focus has shifted to another JPanel I'd like to be able to uncheck the button