java.lang.NullPointerException: A null service reference is not allowed.

Coderanch | Billy Sclater | 3 years ago
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    Root Cause Analysis

    1. java.lang.NullPointerException

      A null service reference is not allowed.

      at org.eclipse.osgi.framework.internal.core.BundleContextImpl.getService()
    2. Eclipse OSGi
      BundleContextImpl.getService
      1. org.eclipse.osgi.framework.internal.core.BundleContextImpl.getService(BundleContextImpl.java:586)
      1 frame
    3. com.javaworld.sample
      Activator.start
      1. com.javaworld.sample.helloworld.Activator.start(Activator.java:18)
      1 frame
    4. Eclipse OSGi
      BundleContextImpl$1.run
      1. org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711)
      1 frame
    5. Java RT
      AccessController.doPrivileged
      1. java.security.AccessController.doPrivileged(Native Method)
      1 frame
    6. Eclipse OSGi
      StartLevelManager.dispatchEvent
      1. org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702)
      2. org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)
      3. org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)
      4. org.eclipse.osgi.framework.internal.core.AbstractBundle.resume(AbstractBundle.java:390)
      5. org.eclipse.osgi.framework.internal.core.Framework.resumeBundle(Framework.java:1176)
      6. org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:559)
      7. org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:544)
      8. org.eclipse.osgi.framework.internal.core.StartLevelManager.incFWSL(StartLevelManager.java:457)
      9. org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(StartLevelManager.java:243)
      10. org.eclipse.osgi.framework.internal.core.StartLevelManager.dispatchEvent(StartLevelManager.java:438)
      11. org.eclipse.osgi.framework.internal.core.StartLevelManager.dispatchEvent(StartLevelManager.java:1)
      11 frames
    7. Eclipse OSGi
      EventManager$EventThread.run
      1. org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
      2. org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:340)
      2 frames