java.lang.NullPointerException

  1. 0

    Get cell value from mysql by JDBC

    Stack Overflow | 3 years ago | A Polite Boy
    java.lang.NullPointerException
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    SignChangeEvent Error

    GitHub | 2 years ago | MackySan
    org.bukkit.event.EventException
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  4. 0

    Instrumentation run failed due to 'java.lang.NullPointerException'

    Stack Overflow | 4 years ago | Felix Karlsson
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.wecharades/com.example.wecharades.views.GameDashboardActivity}: java.lang.NullPointerException

  1. davidvanlaatum 7 times, last 3 months ago
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Root Cause Analysis

  1. java.lang.NullPointerException

    No message provided

    at java.lang.String$CaseInsensitiveComparator.compare()
  2. Java RT
    TreeMap.get
    1. java.lang.String$CaseInsensitiveComparator.compare(String.java:1192)
    2. java.lang.String$CaseInsensitiveComparator.compare(String.java:1186)
    3. java.util.TreeMap.getEntryUsingComparator(TreeMap.java:376)
    4. java.util.TreeMap.getEntry(TreeMap.java:345)
    5. java.util.TreeMap.get(TreeMap.java:278)
    5 frames
  3. MySQL jdbc
    ResultSetImpl.getString
    1. com.mysql.jdbc.ResultSetImpl.findColumn(ResultSetImpl.java:1051)
    2. com.mysql.jdbc.ResultSetImpl.getString(ResultSetImpl.java:5202)
    2 frames
  4. org.apache.jsp
    consulta_jsp._jspService
    1. org.apache.jsp.consulta_jsp._jspService(consulta_jsp.java:74)
    1 frame
  5. GWT dev
    HttpJspBase.service
    1. org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:111)
    1 frame
  6. JavaServlet
    HttpServlet.service
    1. javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
    1 frame
  7. GWT dev
    JspServlet.service
    1. org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:411)
    2. org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:473)
    3. org.apache.jasper.servlet.JspServlet.service(JspServlet.java:377)
    3 frames
  8. JavaServlet
    HttpServlet.service
    1. javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
    1 frame
  9. Glassfish Core
    StandardPipeline.invoke
    1. org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
    2. org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318)
    3. org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
    4. org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734)
    5. org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673)
    5 frames
  10. Glassfish
    WebPipeline.invoke
    1. com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
    1 frame
  11. Glassfish Core
    CoyoteAdapter.service
    1. org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174)
    2. org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:416)
    3. org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:283)
    3 frames
  12. Kernel Classes
    ContainerMapper.service
    1. com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:459)
    2. com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:167)
    2 frames
  13. Grizzly Server
    HttpServerFilter.handleRead
    1. org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:206)
    2. org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:180)
    3. org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:235)
    3 frames
  14. Grizzly
    AbstractThreadPool$Worker.run
    1. org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
    2. org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:283)
    3. org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:200)
    4. org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:132)
    5. org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:111)
    6. org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
    7. org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:536)
    8. org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112)
    9. org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117)
    10. org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56)
    11. org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137)
    12. org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:591)
    13. org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:571)
    13 frames