java.lang.NullPointerException

Oracle Community | 807595 | 1 decade ago
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Root Cause Analysis

  1. java.lang.NullPointerException

    No message provided

    at java.awt.Container.addImpl()
  2. Java RT
    Container.add
    1. java.awt.Container.addImpl(Container.java:621)
    2. java.awt.Container.add(Container.java:307)
    2 frames
  3. Unknown
    NumberBox.init
    1. NumberBox.init(NumberBox.java:21)
    1 frame
  4. Java RT
    Thread.run
    1. sun.applet.AppletPanel.run(AppletPanel.java:353)
    2. java.lang.Thread.run(Thread.java:534)
    2 frames