java.lang.NullPointerException

mkyong.com | 2 months ago
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    java.lang.NullPointerException
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    java.lang.NullPointerException

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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at java.lang.Class.isAssignableFrom()
    2. Java RT
      Class.isAssignableFrom
      1. java.lang.Class.isAssignableFrom(Native Method)
      1 frame
    3. Jetty Server
      ServletHolder.doStart
      1. org.mortbay.jetty.servlet.ServletHolder.doStart(ServletHolder.java:256)
      1 frame
    4. Jetty Util
      AbstractLifeCycle.start
      1. org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
      1 frame
    5. Jetty Server
      WebAppContext.doStart
      1. org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:685)
      2. org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
      3. org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250)
      4. org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517)
      5. org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467)
      5 frames
    6. Jetty Util
      AbstractLifeCycle.start
      1. org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
      1 frame
    7. Jetty Server
      HandlerWrapper.doStart
      1. org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
      1 frame
    8. Jetty Util
      AbstractLifeCycle.start
      1. org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
      1 frame
    9. Jetty Server
      Server.doStart
      1. org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
      2. org.mortbay.jetty.Server.doStart(Server.java:224)
      2 frames
    10. Jetty Util
      AbstractLifeCycle.start
      1. org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
      1 frame