[HARMONY-1699] [classlib][swing] NPE in BasicRootPaneUI caused by the JFileChooser.

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Cannot Reproduce
• Component/s: Classlib
• Environment: Windows XP
• Estimated Complexity: Unknown
• Assignee: Alexei Zakharov
• Reporter: Oleg Khaschansky
• Created: 04/Oct/06 15:07
• Updated: 12/Feb/07 14:24
• Resolved: 12/Feb/07 14:24

Description

To reproduce do the following steps:
1. Run the testcase (listed below).
2. In the FileChooser select the "File Name" text field.
3. Type in the name of any existing directory.
4. Press "Enter" key.

As a result the NPE is thrown and user events are no more processed by the frame when FileChooser dialog is closed. On RI this works fine, no exceptions.
-------------------------------------------------------------------------
The testcase:
import javax.swing.*;

public class Test {
public static void main(String[] args)

{ JFrame f = new JFrame(); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.setSize(100, 100); f.setVisible(true); JButton hello = new JButton("Hello"); f.getContentPane().add(hello); f.getRootPane().setDefaultButton(hello); new JFileChooser().showOpenDialog(f); }

}
-------------------------------------------------------------------------

Harmony output:

java.lang.reflect.InvocationTargetException
at java.awt.EventQueue.invokeAndWait(EventQueue.java:74)
at java.awt.Toolkit.unsafeInvokeAndWait(Toolkit.java:48)
at java.awt.Dialog.showImpl(Dialog.java:256)
at java.awt.Dialog.show(Dialog.java:246)
at java.awt.Component.show(Component.java:3239)
at java.awt.Component.setVisible(Component.java:321)
at javax.swing.JFileChooser.showDialog(JFileChooser.java:51)
at javax.swing.JFileChooser.showOpenDialog(JFileChooser.java:58)
at ttt.main(ttt.java:14)
Caused by: java.lang.NullPointerException
at javax.swing.plaf.basic.BasicRootPaneUI$DefaultButtonAction.isEnabled(BasicRootPaneUI.java:70)
at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:455)
at javax.swing.JComponent.processKeyBinding(JComponent.java:588)
at javax.swing.JComponent.processKeyBindings(JComponent.java:783)
at javax.swing.JComponent.processKeyEvent(JComponent.java:765)
at java.awt.Component.processEvent(Component.java:3825)
at java.awt.Container.processEvent(Container.java:1281)
at java.awt.Component.dispatchEvent(Component.java:3718)
at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:312)
at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:379)
at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:96)
at java.awt.Component.dispatchEvent(Component.java:3687)
at java.awt.EventQueueCore.dispatchEventImpl(EventQueueCore.java:139)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:144)
at java.awt.EventDispatchThread.runModalLoop(EventDispatchThread.java:69)
at java.awt.ModalContext.runModalLoop(ModalContext.java:43)
at java.awt.Dialog$DialogModalContext.runModalLoop(Dialog.java:44)
at java.awt.Dialog.showModal(Dialog.java:369)
at java.awt.Dialog.access$000(Dialog.java:34)
at java.awt.Dialog$1.run(Dialog.java:258)
at java.awt.event.InvocationEvent.runAndNotify(InvocationEvent.java:88)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:77)
at java.awt.EventQueueCore.dispatchEventImpl(EventQueueCore.java:131)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:144)
at java.awt.EventDispatchThread.runModalLoop(EventDispatchThread.java:69)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:48)

Issue Links

• duplicates: HARMONY-1867 [swing][jEdit] NPE in BasicRootPaneUI$DefaultButtonAction after pressing "Enter" in jEdit