java.lang.NullPointerException

Coderanch | Isaac Hewitt | 6 years ago
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    JTree Null Pointer After Refresh

    Coderanch | 6 years ago | Isaac Hewitt
    java.lang.NullPointerException

    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at film_titles.poster_manager.DocumentTree.treeWillExpand()
    2. film_titles.poster_manager
      DocumentTree.treeWillExpand
      1. film_titles.poster_manager.DocumentTree.treeWillExpand(Unknown Source)
      1 frame
    3. Java RT
      JTree.setExpandedState
      1. javax.swing.JTree.fireTreeWillExpand(JTree.java:2723)
      2. javax.swing.JTree.setExpandedState(JTree.java:3421)
      2 frames
    4. TrueZIP
      JFileTree.refresh
      1. de.schlichtherle.io.swing.JFileTree.setExpandedDescendants(JFileTree.java:394)
      2. de.schlichtherle.io.swing.JFileTree.refresh(JFileTree.java:381)
      3. de.schlichtherle.io.swing.JFileTree.refresh(JFileTree.java:337)
      3 frames
    5. film_titles.poster_manager
      DocumentTree$3.run
      1. film_titles.poster_manager.DocumentTree$3.run(Unknown Source)
      1 frame
    6. Java RT
      EventDispatchThread.run
      1. java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
      2. java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
      3. java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
      4. java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
      5. java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
      6. java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
      7. java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
      8. java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
      8 frames