java.lang.IllegalStateException: Assertion failed. WindowsAPI is required to be called from AWT thread only, see http://www.netbeans.org/download/dev/javadoc/OpenAPIs/org/openide/doc-files/threading.html

Visual-paradigm | Aaron Gage | 1 decade ago
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    VP PE: NullPointerException in Netbeans

    Visual-paradigm | 1 decade ago | Aaron Gage
    java.lang.IllegalStateException: Assertion failed. WindowsAPI is required to be called from AWT thread only, see http://www.netbeans.org/download/dev/javadoc/OpenAPIs/org/openide/doc-files/threading.html
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    Netbeans Bugzilla | 1 decade ago | rajeshwarpatil
    java.lang.IllegalStateException: Assertion failed. WindowsAPI is required to be called from AWT thread only, see http://www.netbeans.org/download/dev /javadoc/OpenAPIs/org/openide/doc-files/threading.html at org.netbeans.core.windows.WindowManagerImpl.assertEventDispatchThreadWeak(WindowManagerImpl.java:1110) at org.netbeans.core.windows.WindowManagerImpl.topComponentActivatedNodesChanged(WindowManagerImpl.java:1035)
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    Netbeans Bugzilla | 1 decade ago | davisn
    java.lang.IllegalStateException: Assertion failed. WindowsAPI is required to be called from AWT thread only, see http://www.netbeans.org/download/dev/javadoc/OpenAPIs/org/openide/doc-files/threading.html at org.netbeans.core.windows.WindowManagerImpl.assertEventDispatchThreadWeak(WindowManagerImpl.java:1000) at org.netbeans.core.windows.WindowManagerImpl.findTopComponent(WindowManagerImpl.java:204) at org.netbeans.core.output.OutputView.findDefault(OutputView.java:190) at org.netbeans.core.output.OutputTabInner$OutTermPane.ensureOpen(OutputTabInner.java:2455) at org.netbeans.core.output.OutputTabInner$OutTermPane.access$3100(OutputTabInner.java:700) at org.netbeans.core.output.OutputTabInner$OutTermPane$TermOutputWriter.println(OutputTabInner.java:1509)
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    Exception occurs when execute a servlet from pop-up menu

    Netbeans Bugzilla | 1 decade ago | davisn
    java.lang.IllegalStateException: Assertion failed. WindowsAPI is required to be called from AWT thread only, see http://www.netbeans.org/download/dev/javadoc/OpenAPIs/org/openide/doc-files/threading.html at org.netbeans.core.windows.WindowManagerImpl.assertEventDispatchThreadWeak(WindowManagerImpl.java:1000) at org.netbeans.core.windows.WindowManagerImpl.topComponentIconChanged(WindowManagerImpl.java:932) at org.openide.windows.TopComponent.setIcon(TopComponent.java:618) at org.netbeans.core.output.OutputView.<init>(OutputView.java:130) at org.netbeans.core.output.OutputView.<init>(OutputView.java:146) at org.netbeans.core.output.OutputView.getDefault(OutputView.java:218) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
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    Exception occurs when execute a servlet from pop-up menu

    Netbeans Bugzilla | 1 decade ago | davisn
    java.lang.IllegalStateException: Assertion failed. WindowsAPI is required to be called from AWT thread only, see http://www.netbeans.org/download/dev/javadoc/OpenAPIs/org/openide/doc-files/threading.html at org.netbeans.core.windows.WindowManagerImpl.assertEventDispatchThreadWeak(WindowManagerImpl.java:1000) at org.netbeans.core.windows.WindowManagerImpl.findTopComponent(WindowManagerImpl.java:204) at org.netbeans.core.output.OutputView.findDefault(OutputView.java:190) at org.netbeans.core.output.OutputTabInner$OutTermPane.ensureOpen(OutputTabInner.java:2455) at org.netbeans.core.output.OutputTabInner$OutTermPane.access$3100(OutputTabInner.java:700) at org.netbeans.core.output.OutputTabInner$OutTermPane$TermOutputWriter.println(OutputTabInner.java:1509)

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    Root Cause Analysis

    1. java.lang.IllegalStateException

      Assertion failed. WindowsAPI is required to be called from AWT thread only, see http://www.netbeans.org/download/dev/javadoc/OpenAPIs/org/openide/doc-files/threading.html

      at org.netbeans.core.windows.WindowManagerImpl.assertEventDispatchThreadWeak()
    2. org.netbeans.core
      WindowManagerImpl.getMainWindow
      1. org.netbeans.core.windows.WindowManagerImpl.assertEventDispatchThreadWeak(WindowManagerImpl.java:1099)
      2. org.netbeans.core.windows.WindowManagerImpl.getMainWindow(WindowManagerImpl.java:114)
      2 frames