java.lang.NullPointerException

Stack Overflow | user3502786 | 8 months ago
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  1. 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
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  3. 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
  4. 0

    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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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at hudson.model.Items.getAllItems()
    2. Hudson
      Items.getAllItems
      1. hudson.model.Items.getAllItems(Items.java:357)
      2. hudson.model.Items.getAllItems(Items.java:353)
      2 frames
    3. hudson.plugins.sectioned_view
      SectionedViewSection.getItems
      1. hudson.plugins.sectioned_view.SectionedViewSection.getItems(SectionedViewSection.java:188)
      1 frame
    4. Java RT
      Method.invoke
      1. sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      2. sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
      3. sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      4. java.lang.reflect.Method.invoke(Method.java:497)
      4 frames
    5. Groovy
      AbstractCallSite.call
      1. org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
      2. groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:233)
      3. groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1079)
      4. groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:903)
      5. org.codehaus.groovy.runtime.callsite.PerInstancePojoMetaClassSite.call(PerInstancePojoMetaClassSite.java:35)
      6. org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:42)
      7. org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:108)
      8. org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:112)
      8 frames
    6. Unknown
      Script1$_disableAllJobsInView_closure2.doCall
      1. Script1$_disableAllJobsInView_closure2.doCall(Script1.groovy:41)
      1 frame
    7. Java RT
      Method.invoke
      1. sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      2. sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
      3. sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      4. java.lang.reflect.Method.invoke(Method.java:497)
      4 frames
    8. Groovy
      AbstractCallSite.call
      1. org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
      2. groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:233)
      3. org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:272)
      4. groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:903)
      5. groovy.lang.Closure.call(Closure.java:415)
      6. groovy.lang.Closure.call(Closure.java:428)
      7. org.codehaus.groovy.runtime.DefaultGroovyMethods.each(DefaultGroovyMethods.java:1379)
      8. org.codehaus.groovy.runtime.DefaultGroovyMethods.each(DefaultGroovyMethods.java:1351)
      9. org.codehaus.groovy.runtime.dgm$170.invoke(Unknown Source)
      10. org.codehaus.groovy.runtime.callsite.PojoMetaMethodSite$PojoMetaMethodSiteNoUnwrapNoCoerce.invoke(PojoMetaMethodSite.java:271)
      11. org.codehaus.groovy.runtime.callsite.PojoMetaMethodSite.call(PojoMetaMethodSite.java:53)
      12. org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:42)
      13. org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:108)
      14. org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:116)
      14 frames
    9. Unknown
      Script1.run
      1. Script1.disableAllJobsInView(Script1.groovy:22)
      2. Script1.run(Script1.groovy:56)
      2 frames
    10. Groovy
      GroovyShell.evaluate
      1. groovy.lang.GroovyShell.evaluate(GroovyShell.java:580)
      2. groovy.lang.GroovyShell.evaluate(GroovyShell.java:618)
      3. groovy.lang.GroovyShell.evaluate(GroovyShell.java:589)
      3 frames
    11. Hudson
      RemotingDiagnostics$Script.call
      1. hudson.util.RemotingDiagnostics$Script.call(RemotingDiagnostics.java:142)
      2. hudson.util.RemotingDiagnostics$Script.call(RemotingDiagnostics.java:114)
      2 frames
    12. Hudson :: Remoting Layer
      LocalChannel.call
      1. hudson.remoting.LocalChannel.call(LocalChannel.java:45)
      1 frame
    13. Hudson
      RemotingDiagnostics.executeGroovy
      1. hudson.util.RemotingDiagnostics.executeGroovy(RemotingDiagnostics.java:111)
      1 frame
    14. jenkins.model
      Jenkins.doScript
      1. jenkins.model.Jenkins._doScript(Jenkins.java:3608)
      2. jenkins.model.Jenkins.doScript(Jenkins.java:3580)
      2 frames
    15. Java RT
      Method.invoke
      1. sun.reflect.GeneratedMethodAccessor3037.invoke(Unknown Source)
      2. sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      3. java.lang.reflect.Method.invoke(Method.java:497)
      3 frames
    16. Stapler
      Stapler.service
      1. org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:298)
      2. org.kohsuke.stapler.Function.bindAndInvoke(Function.java:161)
      3. org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:96)
      4. org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:121)
      5. org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
      6. org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:746)
      7. org.kohsuke.stapler.Stapler.invoke(Stapler.java:876)
      8. org.kohsuke.stapler.Stapler.invoke(Stapler.java:649)
      9. org.kohsuke.stapler.Stapler.service(Stapler.java:238)
      9 frames
    17. JavaServlet
      HttpServlet.service
      1. javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
      1 frame
    18. Jetty
      ServletHandler$CachedChain.doFilter
      1. org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:686)
      2. org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1494)
      2 frames
    19. Hudson
      PluginServletFilter.doFilter
      1. hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:132)
      2. hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:123)
      2 frames
    20. Jetty
      ServletHandler$CachedChain.doFilter
      1. org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1482)
      1 frame
    21. Hudson
      CrumbFilter.doFilter
      1. hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:49)
      1 frame
    22. Jetty
      ServletHandler$CachedChain.doFilter
      1. org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1482)
      1 frame
    23. Hudson
      ChainedServletFilter$1.doFilter
      1. hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:84)
      2. hudson.security.UnwrapSecurityExceptionFilter.doFilter(UnwrapSecurityExceptionFilter.java:51)
      3. hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
      3 frames
    24. jenkins.security
      ExceptionTranslationFilter.doFilter
      1. jenkins.security.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:117)
      1 frame
    25. Hudson
      ChainedServletFilter$1.doFilter
      1. hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
      1 frame
    26. Acegi Security Core
      AnonymousProcessingFilter.doFilter
      1. org.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:125)
      1 frame
    27. Hudson
      ChainedServletFilter$1.doFilter
      1. hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
      1 frame
    28. Acegi Security Core
      RememberMeProcessingFilter.doFilter
      1. org.acegisecurity.ui.rememberme.RememberMeProcessingFilter.doFilter(RememberMeProcessingFilter.java:142)
      1 frame
    29. Hudson
      ChainedServletFilter$1.doFilter
      1. hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
      1 frame
    30. Acegi Security Core
      AbstractProcessingFilter.doFilter
      1. org.acegisecurity.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:271)
      1 frame
    31. Hudson
      ChainedServletFilter$1.doFilter
      1. hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
      1 frame
    32. jenkins.security
      BasicHeaderProcessor.doFilter
      1. jenkins.security.BasicHeaderProcessor.doFilter(BasicHeaderProcessor.java:93)
      1 frame
    33. Hudson
      ChainedServletFilter$1.doFilter
      1. hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
      1 frame
    34. Acegi Security Core
      HttpSessionContextIntegrationFilter.doFilter
      1. org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:249)
      1 frame
    35. Hudson
      HudsonFilter.doFilter
      1. hudson.security.HttpSessionContextIntegrationFilter2.doFilter(HttpSessionContextIntegrationFilter2.java:67)
      2. hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
      3. hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76)
      4. hudson.security.HudsonFilter.doFilter(HudsonFilter.java:171)
      4 frames
    36. Jetty
      ServletHandler$CachedChain.doFilter
      1. org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1482)
      1 frame
    37. Stapler
      CompressionFilter.doFilter
      1. org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:49)
      1 frame
    38. Jetty
      ServletHandler$CachedChain.doFilter
      1. org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1482)
      1 frame
    39. Hudson
      CharacterEncodingFilter.doFilter
      1. hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:81)
      1 frame
    40. Jetty
      ServletHandler$CachedChain.doFilter
      1. org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1482)
      1 frame
    41. Stapler
      DiagnosticThreadNameFilter.doFilter
      1. org.kohsuke.stapler.DiagnosticThreadNameFilter.doFilter(DiagnosticThreadNameFilter.java:30)
      1 frame
    42. Jetty
      AsyncHttpConnection.handle
      1. org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1474)
      2. org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:499)
      3. org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
      4. org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:533)
      5. org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
      6. org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1086)
      7. org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:428)
      8. org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
      9. org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1020)
      10. org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
      11. org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
      12. org.eclipse.jetty.server.Server.handle(Server.java:370)
      13. org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489)
      14. org.eclipse.jetty.server.AbstractHttpConnection.content(AbstractHttpConnection.java:960)
      15. org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:1021)
      16. org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:865)
      17. org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
      18. org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
      18 frames
    43. GWT dev
      SelectChannelEndPoint$1.run
      1. org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:668)
      2. org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)
      2 frames
    44. winstone
      BoundedExecutorService$1.run
      1. winstone.BoundedExecutorService$1.run(BoundedExecutorService.java:77)
      1 frame
    45. Java RT
      Thread.run
      1. java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
      2. java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
      3. java.lang.Thread.run(Thread.java:745)
      3 frames