java.lang.NullPointerException: null

Google Groups | Unknown author | 9 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 | 3 years ago | angelo087
    java.lang.NullPointerException: Cannot invoke method getAt() on null object

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    Root Cause Analysis

    1. java.lang.NullPointerException

      null

      at org.sonar.plugins.ldap.LdapSearch.find()
    2. org.sonar.plugins
      LdapUsersProvider.doGetUserDetails
      1. org.sonar.plugins.ldap.LdapSearch.find(LdapSearch.java:126)[na:na]
      2. org.sonar.plugins.ldap.LdapSearch.findUnique(LdapSearch.java:143)[na:na]
      3. org.sonar.plugins.ldap.LdapUsersProvider.doGetUserDetails(LdapUsersProvider.java:77)[na:na]
      3 frames
    3. SonarQube :: Plugin API
      ExternalUsersProvider.doGetUserDetails
      1. org.sonar.api.security.ExternalUsersProvider.doGetUserDetails(ExternalUsersProvider.java:54)[sonar-plugin-api-6.0.jar:na]
      1 frame
    4. org.sonar.server
      MasterServletFilter.doFilter
      1. org.sonar.server.authentication.RealmAuthenticator.doAuthenticate(RealmAuthenticator.java:89)[sonar-server-6.0.jar:na]
      2. org.sonar.server.authentication.RealmAuthenticator.authenticate(RealmAuthenticator.java:83)[sonar-server-6.0.jar:na]
      3. org.sonar.server.authentication.CredentialsAuthenticator.authenticate(CredentialsAuthenticator.java:56)[sonar-server-6.0.jar:na]
      4. org.sonar.server.authentication.CredentialsAuthenticator.authenticate(CredentialsAuthenticator.java:45)[sonar-server-6.0.jar:na]
      5. org.sonar.server.authentication.ws.LoginAction.authenticate(LoginAction.java:91)[sonar-server-6.0.jar:na]
      6. org.sonar.server.authentication.ws.LoginAction.doFilter(LoginAction.java:76)[sonar-server-6.0.jar:na]
      7. org.sonar.server.platform.MasterServletFilter$GodFilterChain.doFilter(MasterServletFilter.java:125)[sonar-server-6.0.jar:na]
      8. org.sonar.server.platform.MasterServletFilter.doFilter(MasterServletFilter.java:94)[sonar-server-6.0.jar:na]
      8 frames
    5. Glassfish Core
      ApplicationFilterChain.doFilter
      1. org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)[tomcat-embed-core-8.0.32.jar:8.0.32]
      2. org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)[tomcat-embed-core-8.0.32.jar:8.0.32]
      2 frames
    6. org.sonar.server
      UserSessionFilter.doFilter
      1. org.sonar.server.user.UserSessionFilter.doFilter(UserSessionFilter.java:56)[sonar-server-6.0.jar:na]
      1 frame
    7. Glassfish Core
      ApplicationFilterChain.doFilter
      1. org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)[tomcat-embed-core-8.0.32.jar:8.0.32]
      2. org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)[tomcat-embed-core-8.0.32.jar:8.0.32]
      2 frames
    8. org.sonar.server
      RoutesFilter.doFilter
      1. org.sonar.server.platform.RoutesFilter.doFilter(RoutesFilter.java:55)[sonar-server-6.0.jar:na]
      1 frame
    9. Glassfish Core
      ApplicationFilterChain.doFilter
      1. org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)[tomcat-embed-core-8.0.32.jar:8.0.32]
      2. org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)[tomcat-embed-core-8.0.32.jar:8.0.32]
      2 frames
    10. org.sonar.server
      ProfilingFilter.doFilter
      1. org.sonar.server.platform.ProfilingFilter.doFilter(ProfilingFilter.java:84)[sonar-server-6.0.jar:na]
      1 frame
    11. Glassfish Core
      CoyoteAdapter.service
      1. org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)[tomcat-embed-core-8.0.32.jar:8.0.32]
      2. org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)[tomcat-embed-core-8.0.32.jar:8.0.32]
      3. org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)[tomcat-embed-core-8.0.32.jar:8.0.32]
      4. org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)[tomcat-embed-core-8.0.32.jar:8.0.32]
      5. org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)[tomcat-embed-core-8.0.32.jar:8.0.32]
      6. org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)[tomcat-embed-core-8.0.32.jar:8.0.32]
      7. org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)[tomcat-embed-core-8.0.32.jar:8.0.32]
      8. org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:522)[tomcat-embed-core-8.0.32.jar:8.0.32]
      8 frames
    12. Grizzly HTTP
      NioEndpoint$SocketProcessor.run
      1. org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1095)[tomcat-embed-core-8.0.32.jar:8.0.32]
      2. org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:672)[tomcat-embed-core-8.0.32.jar:8.0.32]
      3. org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1500)[tomcat-embed-core-8.0.32.jar:8.0.32]
      4. org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1456)[tomcat-embed-core-8.0.32.jar:8.0.32]
      4 frames
    13. Java RT
      ThreadPoolExecutor$Worker.run
      1. java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)[na:1.8.0_101]
      2. java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)[na:1.8.0_101]
      2 frames
    14. Tomcat Util
      TaskThread$WrappingRunnable.run
      1. org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)[tomcat-embed-core-8.0.32.jar:8.0.32]
      1 frame
    15. Java RT
      Thread.run
      1. java.lang.Thread.run(Unknown Source)[na:1.8.0_101]
      1 frame