java.lang.NullPointerException

Terracotta | nferreir | 6 years ago
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    Getting a nullpointer exception when switching displayables in J2ME

    Stack Overflow | 6 years ago | Pallinder
    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
  2. 0

    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

    Stack Overflow | 2 years ago | angelo087
    java.lang.NullPointerException: Cannot invoke method getAt() on null object
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    NullPointerException in MIDlet with left soft key

    Stack Overflow | 6 years ago | berry120
    java.lang.NullPointerException: 0 at javax.microedition.lcdui.Display$ChameleonTunnel.callItemListener(), bci=57 at com.sun.midp.chameleon.layers.SoftButtonLayer.processCommand(), bci=57 at com.sun.midp.chameleon.layers.SoftButtonLayer.soft1(), bci=37 at com.sun.midp.chameleon.layers.SoftButtonLayer.keyInput(), bci=36 at com.sun.midp.chameleon.CWindow.keyInput(), bci=38 at javax.microedition.lcdui.Display$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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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at org.apache.catalina.authenticator.FormAuthenticator.saveRequest()
    2. Glassfish Core
      StandardValveContext.invokeNext
      1. org.apache.catalina.authenticator.FormAuthenticator.saveRequest(FormAuthenticator.java:414)
      2. org.apache.catalina.authenticator.FormAuthenticator.authenticate(FormAuthenticator.java:209)
      3. org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504)
      4. org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
      4 frames
    3. org.terracotta.modules
      SessionValve50.invoke
      1. org.terracotta.modules.tomcat.tomcat_5_0.SessionValve50.invoke(SessionValve50.java:78)
      1 frame
    4. org.terracotta.session
      TerracottaTomcat50xSessionValve.invoke
      1. org.terracotta.session.TerracottaTomcat50xSessionValve.invoke(TerracottaTomcat50xSessionValve.java:43)
      1 frame
    5. Glassfish Core
      ContainerBase.invoke
      1. org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
      2. org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
      3. org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
      4. org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
      5. org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
      6. org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
      7. org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:535)
      8. org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
      9. org.apache.catalina.authenticator.SingleSignOn.invoke(SingleSignOn.java:417)
      10. org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
      11. org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
      12. org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
      13. org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
      14. org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
      15. org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
      15 frames
    6. org.apache.coyote
      CoyoteAdapter.service
      1. org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
      1 frame
    7. Embedded GlassFish Web
      SocketConnection.runIt
      1. org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:300)
      2. org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:374)
      3. org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:743)
      4. org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:675)
      5. org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:866)
      5 frames
    8. Tomcat Util
      ThreadPool$ControlRunnable.run
      1. org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
      1 frame
    9. Java RT
      Thread.run
      1. java.lang.Thread.run(Thread.java:662)
      1 frame