FULL PRODUCT VERSION :
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-b64)
Java HotSpot(TM) Client VM (build 1.5.0-b64, mixed mode, sharing)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows XP [Version 5.1.2600]

A DESCRIPTION OF THE PROBLEM :
JOptionPane's showInternal*Dialog methods never return.

When an Internal Dialog is displayed it blocks the current Thread until the Dialog is closed at which point the Thread resumes.  However I have an Internal Dialog being displayed from a Thread which isn't the Dispatch Thread and despite the OK button being pressed the Thread never resumes beyond the call to JOptionPane.showInternal***Dialog.

The problem seems to be in the java.awt.Container.startLWModal() method (lines 2633 -2639)

                while (windowClosingException == null) {
                    try {
                        getTreeLock().wait();
                    } catch (InterruptedException e) {
                        break;
                    }
                }

where wait() returns but windowClosingException is always null.  windowClosingException is set in two locations in java.awt.Component (lines 3933 and 4002)but only in response to a WindowClosing event not an Internal Frame closing.

As the Thread never resumes I am unable to process the User's input and proceed.  The example code provided works on JDK 1.4.1_05 and JDK 1.4.2, but not in JDK 1.5.0 beta 2, JDK 1.5.0 rc and JDK 1.5.0

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Use the example source code below.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Using the example code below:
System.out -> "Before showMessageDialog"
Message Dialog Appears
Click Message Dialog's OK button
Message Dialog Disappears
System.out-> "After showMessageDialog"
System.out -> "Before showInternalMessageDialog"
JDesktopPane containing Internal Message Dialog Appears
Click Internal Message Dialog's OK button
Internal Message Dialog Disappears
System.out -> After showInternalMessageDialog
JDesktopPane disappears
  Program exits
ACTUAL -
Using the example code below:
System.out -> "Before showMessageDialog"
Message Dialog Appears
Click Message Dialog's OK button
Message Dialog Disappears
System.out-> "After showMessageDialog"
System.out -> "Before showInternalMessageDialog"
JDesktopPane containing Internal Message Dialog Appears
Click Internal Message Dialog's OK button
Internal Message Dialog Disappears


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import javax.swing.JDesktopPane;
import javax.swing.JFrame;
import javax.swing.JOptionPane;

public class OptionPaneTest
{
    public static void main( String[] args )
    {
        System.out.println( "Before showMessageDialog" );
        JOptionPane.showMessageDialog( null, "showMessageDialog" );
        System.out.println( "After showMessageDialog" );

        JDesktopPane desktopPane = new JDesktopPane();
        JFrame frame = new JFrame();
        frame.getContentPane().add( desktopPane );
        frame.setSize( 640, 480 );
        System.out.println( "Before showInternalMessageDialog" );
        JOptionPane.showInternalMessageDialog( desktopPane, "showInternalMessageDialog" );
        System.out.println( "After showInternalMessageDialog" );

        System.exit( 0 );
    }
}

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

Release Regression From : 1.4.2_05
The above release value was the last known release where this 
bug was known to work. Since then there has been a regression.
###@###.### 10/13/04 21:34 GMT