Disposing Undecorated JFrame throws NullPointerException. This is regression from the hopper build 07. The bug is reproducible in hopper build 08 and 09 and not on b07 (only solaris 8 and 9 not on win32). Following is the stack trace:

java.lang.NullPointerException: NullPointerException
        at sun.awt.motif.X11InputMethod.createXICNative(Native Method)
        at sun.awt.motif.X11InputMethod.activate(X11InputMethod.java:265)
        at sun.awt.im.InputContext.activateInputMethod(InputContext.java:342)
        at sun.awt.im.InputContext.focusGained(InputContext.java:306)
        at sun.awt.im.InputContext.dispatchEvent(InputContext.java:218)
        at sun.awt.im.InputMethodContext.dispatchEvent(InputMethodContext.java:180)
        at java.awt.Component.dispatchEventImpl(Component.java:3548)
        at java.awt.Container.dispatchEventImpl(Container.java:1582)
        at java.awt.Window.dispatchEventImpl(Window.java:1585)
        at java.awt.Component.dispatchEvent(Component.java:3439)
        at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1688)
        at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:703)
        at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:406)
        at java.awt.Component.dispatchEventImpl(Component.java:3468)
        at java.awt.Container.dispatchEventImpl(Container.java:1582)
        at java.awt.Window.dispatchEventImpl(Window.java:1585)
        at java.awt.Component.dispatchEvent(Component.java:3439)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:448)
        at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:197)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:144)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:136)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:99)


Java Version:
java version "1.4.1-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.1-beta-b09)
Java HotSpot(TM) Client VM (build 1.4.1-beta-b09, mixed mode)


Steps to reproduce:
1. Compile the program dispose1.java
2. Run using appletviewer dispose1.java
3. Throws NPE.
4. If not, close appet and run again.

The bug is not reproducible in the following condition:
1. If you comment frame.dispose() line in the program.
2. If only Undecorated JFrame is disposed.
3. If the frame is not undecorated.

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import java.awt.*;
import java.applet.*;
import javax.swing.*;

/*<applet CODE="disposeTest1" WIDTH=300 HEIGHT=300> </applet>*/

public class disposeTest1 extends Applet {

        JFrame frame, frame1;


   public void init() {

frame=new JFrame();
        frame.setTitle("Frame");
frame.setUndecorated(true);

        frame1=new JFrame();
        frame1.setTitle("Frame1");

        frame.setBackground(Color.red);
        frame.setSize(300,200);
        frame.setLocation(0,0);
        frame.setVisible(true);

        frame1.setBackground(Color.blue);
        frame1.setSize(300,200);
        frame1.setLocation(400,0);
        frame1.setVisible(true);

}

public void start() {


frame.toFront();

try{
Thread.sleep(1000);
}catch(Exception e){
e.printStackTrace();
}

System.out.println("\n****** Disposing the frames ********\n");

frame.dispose(); //if this line is commented, It does not throw NPE
frame1.dispose();

try{
Thread.sleep(2000);
}catch(Exception e){
e.printStackTrace();
}

System.out.println("\n****** Frames are disposed ********\n");

}

}
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