java.lang.NullPointerException

There are no available Samebug tips for this exception. Do you have an idea how to solve this issue? A short tip would help users who saw this issue last week.

  • Alt-Key generates NullPointerException
    via by 807577,
  • Performance Regression over X11
    via GitHub by jimhester
    ,
  • error in setModel builder
    via Stack Overflow by galeonweb
    ,
  • Java swing multiple JTables one ColumnModel
    via Stack Overflow by Quillion
    ,
  • NullPointerException I don't understand
    via Stack Overflow by Peny
    ,
    • java.lang.NullPointerException at javax.swing.SwingUtilities.getWindowAncestor(SwingUtilities.java:63) at com.sun.java.swing.plaf.windows.WindowsRootPaneUI$AltProcessor.postProcessKeyEvent(WindowsRootPaneUI.java:158) at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:637) at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:831) at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:741) at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:592) at java.awt.Component.dispatchEventImpl(Component.java:3505) at java.awt.Container.dispatchEventImpl(Container.java:1627) at java.awt.Window.dispatchEventImpl(Window.java:1606) at java.awt.Component.dispatchEvent(Component.java:3476) at java.awt.EventQueue.dispatchEvent(EventQueue.java:456) at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:201) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:145) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:137) at java.awt.EventDispatchThread.run(EventDispatchThread.java:100)

    Users with the same issue

    Unknown visitor2 times, last one,
    Unknown visitor1 times, last one,
    Unknown visitor1 times, last one,
    bpbhat77
    115 times, last one,
    Unknown visitor1 times, last one,
    5 more bugmates