java.lang.NullPointerException

hivmr.com | 8 months ago
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  4. 0

    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
  5. 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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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at org.apache.tomcat.util.buf.ByteChunk.append()
    2. Tomcat Util
      ByteChunk.append
      1. org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:324)
      1 frame
    3. Glassfish Core
      CoyoteAdapter.service
      1. org.apache.catalina.authenticator.FormAuthenticator.saveRequest(FormAuthenticator.java:487)
      2. org.apache.catalina.authenticator.FormAuthenticator.authenticate(FormAuthenticator.java:236)
      3. org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490)
      4. org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
      5. org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
      6. org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
      7. org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
      7 frames
    4. Grizzly HTTP
      LeaderFollowerWorkerThread.runIt
      1. org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
      2. org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:667)
      3. org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
      4. org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
      4 frames
    5. Tomcat Util
      ThreadPool$ControlRunnable.run
      1. org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
      1 frame
    6. Java RT
      Thread.run
      1. java.lang.Thread.run(Unknown Source)
      1 frame