java.lang.NullPointerException

Oracle Community | 807596 | 1 decade ago
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    java.lang.NullPointerException: 0 at javax.microedition.lcdui.Display$ChameleonTunnel.callScreenListener(), bci=46 at com.sun.midp.chameleon.layers.SoftButtonLayer.processCommand(), bci=74 at com.sun.midp.chameleon.layers.SoftButtonLayer.soft1(), bci=37 at com.sun.midp.chameleon.layers.SoftButtonLayer.keyInput(), bci=36 at com.sun.midp.chameleon.CWindow.keyInput(), bci=38 at javax.microedition.lcdui.Display$DisplayEventConsumerImpl.handleKeyEvent(), bci=17 at com.sun.midp.lcdui.DisplayEventListener.process(), bci=277 at com.sun.midp.events.EventQueue.run(), bci=179
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    J2ME (Java) - Null Pointer Exception caught in Display Class

    Stack Overflow | 6 years ago | Tom
    java.lang.NullPointerException: 0 at javax.microedition.lcdui.Display$ChameleonTunnel.callScreenListener(), bci=46 at com.sun.midp.chameleon.layers.SoftButtonLayer.processCommand(), bci=74 at com.sun.midp.chameleon.layers.SoftButtonLayer.soft1(), bci=37 at com.sun.midp.chameleon.layers.SoftButtonLayer.keyInput(), bci=36 at com.sun.midp.chameleon.CWindow.keyInput(), bci=38 at javax.microedition.lcdui.Display$DisplayEventConsumerImpl.handleKeyEvent(), bci=17 at com.sun.midp.lcdui.DisplayEventListener.process(), bci=277 at com.sun.midp.events.EventQueue.run(), bci=179
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    Cloud Foundry v2 in Grails

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    java.lang.NullPointerException: Cannot invoke method getAt() on null object

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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at sun.awt.X11.XMenuPeer.repaintMenuItem()
    2. sun.awt.X11
      XCheckboxMenuItemPeer.setState
      1. sun.awt.X11.XMenuPeer.repaintMenuItem(XMenuPeer.java:360)
      2. sun.awt.X11.XCheckboxMenuItemPeer.setState(XCheckboxMenuItemPeer.java:46)
      2 frames
    3. Java RT
      CheckboxMenuItem.setState
      1. java.awt.CheckboxMenuItem.setState(CheckboxMenuItem.java:177)
      1 frame
    4. ImageJ
      Executer.run
      1. ij.Menus.updateMenus(Menus.java:817)
      2. ij.WindowManager.setCurrentWindow(WindowManager.java:47)
      3. ij.WindowManager.addImageWindow(WindowManager.java:146)
      4. ij.WindowManager.addWindow(WindowManager.java:136)
      5. ij.gui.ImageWindow.<init>(ImageWindow.java:67)
      6. ij.gui.ImageWindow.<init>(ImageWindow.java:45)
      7. ij.ImagePlus.show(ImagePlus.java:300)
      8. ij.ImagePlus.show(ImagePlus.java:281)
      9. ij.plugin.AboutBox.run(AboutBox.java:70)
      10. ij.IJ.runPlugIn(IJ.java:101)
      11. ij.Executer.runPlugIn(Executer.java:170)
      12. ij.Executer.runCommand(Executer.java:129)
      13. ij.Executer.run(Executer.java:62)
      13 frames
    5. Java RT
      Thread.run
      1. java.lang.Thread.run(Thread.java:595)
      1 frame