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This issue was originally marked as duplicate of issue 117770, that is already fixed. This issue is still valid, so this seems to be another issue, but it might be related. Build: NetBeans IDE Dev (Build 200905051401) VM: Java HotSpot(TM) Client VM, 1.5.0_16-132, Java(TM) 2 Runtime Environment, Standard Edition, 1.5.0_16-b06-275 OS: Mac OS X, 10.4.11, i386 User Comments: pribyl: I expanded the "javaaplication" node in the Projects view by clicking on the triangle next to it. (I will try to reproduce this and provide more info) GUEST: I was just mouse clinking around the screen. Stacktrace: java.lang.NullPointerException at apple.laf.AquaTreeUI$TreeArrowMouseInputHandler.paintOneControl(AquaTreeUI.java:463) at apple.laf.AquaTreeUI$TreeArrowMouseInputHandler.mouseDragged(AquaTreeUI.java:430) at java.awt.AWTEventMulticaster.mouseDragged(AWTEventMulticaster.java:262) at java.awt.AWTEventMulticaster.mouseDragged(AWTEventMulticaster.java:261) at java.awt.Component.processMouseMotionEvent(Component.java:5631) at javax.swing.JComponent.processMouseMotionEvent(JComponent.java:3153)
Created attachment 81710 [details] stacktrace
Well, I am not able to describe _exact_ steps, but I managed to reproduce this quite easily by expanding/collapsing the nodes in Projects view. Sometimes this Exception was thrown immediately, sometimes after approx. 10-15 clicks.
works for me with jdk 1.6.0_15, mac os x, 10.6.1 can you reproduce this with jdk 1.6?
Nope, I did not encounter this for quite a long time and now I am not able to reproduce. Marking as WORKSFORME then.
.. so closing