java.lang.NullPointerException

Oracle Community | 807551 | 1 decade ago
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    Error message

    Oracle Community | 1 decade ago | 807551
    java.lang.NullPointerException

    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at Tute04.actionPerformed()
    2. Unknown
      Tute04.actionPerformed
      1. Tute04.actionPerformed(Tute04.java:337)
      1 frame
    3. Java RT
      EventDispatchThread.run
      1. java.awt.Button.processActionEvent(Button.java:381)
      2. java.awt.Button.processEvent(Button.java:350)
      3. java.awt.Component.dispatchEventImpl(Component.java:3526)
      4. java.awt.Component.dispatchEvent(Component.java:3367)
      5. java.awt.EventQueue.dispatchEvent(EventQueue.java:445)
      6. java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:191)
      7. java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:144)
      8. java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
      9. java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:130)
      10. java.awt.EventDispatchThread.run(EventDispatchThread.java:98)
      10 frames