JDK-8191639 : NPE from BasicListUI.Actions.getNextPageIndex
  • Type: Bug
  • Component: client-libs
  • Sub-Component: javax.swing
  • Affected Version: 7,8,9,10
  • Priority: P3
  • Status: Resolved
  • Resolution: Fixed
  • OS: other
  • CPU: x86
  • Submitted: 2017-11-13
  • Updated: 2017-12-15
  • Resolved: 2017-12-08
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Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
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JDK 10
10 b36Fixed
Related Reports
Duplicate :  
JDK-8041682 - NPE from BasicListUI.Actions.getNextPageIndex
Description
FULL PRODUCT VERSION :
Any version

ADDITIONAL OS VERSION INFORMATION :
Any OS

A DESCRIPTION OF THE PROBLEM :
The bug below is NOT resolved:

JDK-8041682 : NPE from BasicListUI.Actions.getNextPageIndex
http://bugs.java.com/view_bug.do?bug_id=8041682

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Type page up/down in a javax.swing.JList


ERROR MESSAGES/STACK TRACES THAT OCCUR :
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
	at javax.swing.plaf.basic.BasicListUI$Actions.getNextPageIndex(BasicListUI.java:2136)
	at javax.swing.plaf.basic.BasicListUI$Actions.actionPerformed(BasicListUI.java:1924)
	at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1663)
	at javax.swing.JComponent.processKeyBinding(JComponent.java:2882)
	at javax.swing.JComponent.processKeyBindings(JComponent.java:2929)
	at javax.swing.JComponent.processKeyEvent(JComponent.java:2845)
	at java.awt.Component.processEvent(Component.java:6312)
	at java.awt.Container.processEvent(Container.java:2236)
	at java.awt.Component.dispatchEventImpl(Component.java:4891)
	at java.awt.Container.dispatchEventImpl(Container.java:2294)
	at java.awt.Component.dispatchEvent(Component.java:4713)
	at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1954)
	at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:806)
	at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:1074)
	at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:945)
	at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:771)
	at java.awt.Component.dispatchEventImpl(Component.java:4762)
	at java.awt.Container.dispatchEventImpl(Container.java:2294)
	at java.awt.Window.dispatchEventImpl(Window.java:2750)
	at java.awt.Component.dispatchEvent(Component.java:4713)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
	at java.awt.EventQueue.access$500(EventQueue.java:97)
	at java.awt.EventQueue$3.run(EventQueue.java:709)
	at java.awt.EventQueue$3.run(EventQueue.java:703)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
	at java.awt.EventQueue$4.run(EventQueue.java:731)
	at java.awt.EventQueue$4.run(EventQueue.java:729)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)


REPRODUCIBILITY :
This bug can be reproduced always.
Comments
Reported with: JDK 8u152 Generic NPE error received from BasicListUI.Actions.getNextPageIndex Hitting page up or page down in the list triggers the error. Checked for reported as well as other JDK versions and could confirm the issue. Results: ======== 7u80: FAIL 8: FAIL 8u152: FAIL 9: FAIL 9.0.1: FAIL 10 ea b30: FAIL Output with JDK 8u152: ==================== Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException at javax.swing.plaf.basic.BasicListUI$Actions.getNextPageIndex(BasicListUI.java:2119) at javax.swing.plaf.basic.BasicListUI$Actions.actionPerformed(BasicListUI.java:1924) at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1663) at javax.swing.JComponent.processKeyBinding(JComponent.java:2882) at javax.swing.JComponent.processKeyBindings(JComponent.java:2929) at javax.swing.JComponent.processKeyEvent(JComponent.java:2845) at java.awt.Component.processEvent(Component.java:6310) at java.awt.Container.processEvent(Container.java:2237) at java.awt.Component.dispatchEventImpl(Component.java:4889) at java.awt.Container.dispatchEventImpl(Container.java:2295) at java.awt.Component.dispatchEvent(Component.java:4711) at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1954) ========================== To verify, run the attached test case. Hit PGUP or PGDN in the list. The issue is similar to as reported with JDK-8041682 which is in closed state. This report includes a valid confirmed test case.
21-11-2017