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Product Version = NetBeans IDE 8.1 (Build 201510222201) Operating System = Linux version 4.2.0-25-generic running on amd64 Java; VM; Vendor = 1.8.0_60 Runtime = Java HotSpot(TM) 64-Bit Server VM 25.60-b23 Reproducibility: Happens sometimes, but not always STEPS: * Install Netbeans 8.1 on Ubuntu 14.04 * Use Netbeans awhile, notice it will black the whole screen after awhile, requiring mouseover to "see" the icons, or resize window to redraw the screen. I have seen this on two 64-bit Intel Ubuntu 14.04 machines. ACTUAL: Have to downgrade to Netbeans 8.0 to fix this bug that happens fairly often. EXPECTED: It should show the window correctly
It's more about JDK version than NetBeans version. This problem is associated with ClassCastException, that is reported as bug #219756. *** This bug has been marked as a duplicate of bug 219756 ***