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[ BUILD # : 200408171800 ] [ JDK VERSION : J2SE 1.5.0 ] The synchronization of generics is not yet implemented, so I got this exception. I guess the user should be informed gracefully. org.openide.src.SourceException$IO: Source containing generics cannot be modified: com/ser/toolkit/cache/SimpleCache.java at org.netbeans.modules.java.bridge.SourceElementImpl.checkWritable(SourceElementImpl.java:324) at org.netbeans.modules.java.bridge.MemberElementImpl.checkWritable(MemberElementImpl.java:158) at org.netbeans.modules.java.bridge.ClassElementImpl.checkWritable(ClassElementImpl.java:614) at org.netbeans.modules.java.bridge.ClassElementImpl.changeMethods(ClassElementImpl.java:552) at org.openide.src.ClassElement.addMethod(ClassElement.java:424) at org.netbeans.modules.java.tools.InheritanceSupport2$1.run(InheritanceSupport2.java:201) at org.netbeans.modules.java.bridge.SourceElementImpl.runAtomic(SourceElementImpl.java:288) at org.netbeans.modules.java.bridge.SourceElementImpl.runAtomicAsUser(SourceElementImpl.java:296) at org.netbeans.modules.java.bridge.SrcElementImpl.runAtomicAsUser(SrcElementImpl.java:251) at org.openide.src.SourceElement.runAtomicAsUser(SourceElement.java:287) at org.netbeans.modules.java.tools.InheritanceSupport2.overrideMethod(InheritanceSupport2.java:210) at org.netbeans.modules.java.tools.OverrideAction.performAction(OverrideAction.java:82) at org.openide.util.actions.NodeAction$3.run(NodeAction.java:440) at org.openide.util.actions.CallableSystemAction.doPerformAction(CallableSystemAction.java:116) at org.openide.util.actions.NodeAction$DelegateAction.actionPerformed(NodeAction.java:438) at org.openide.windows.TopComponent.processKeyBinding(TopComponent.java:690) at javax.swing.JComponent.processKeyBindings(JComponent.java:2772) at javax.swing.JComponent.processKeyEvent(JComponent.java:2689) at java.awt.Component.processEvent(Component.java:5242) at java.awt.Container.processEvent(Container.java:1961) at java.awt.Component.dispatchEventImpl(Component.java:3933) at java.awt.Container.dispatchEventImpl(Container.java:2019) at java.awt.Component.dispatchEvent(Component.java:3781) at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1810) at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:668) at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:916) at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:794) at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:632) at java.awt.Component.dispatchEventImpl(Component.java:3819) at java.awt.Container.dispatchEventImpl(Container.java:2019) at java.awt.Window.dispatchEventImpl(Window.java:1764) at java.awt.Component.dispatchEvent(Component.java:3781) [catch] at java.awt.EventQueue.dispatchEvent(EventQueue.java:463) at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:234) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149) at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
Should be fixed in 4.0.
*** This issue has been marked as a duplicate of 47029 ***