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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:1045)
    2. java.awt.Container.add(Container.java:365)
    2 frames
  3. org.javaguitutorial.gui
    FirstGUI_driver.main
    1. org.javaguitutorial.gui.FirstGUI.<init>(FirstGUI.java:47)
    2. org.javaguitutorial.gui.FirstGUI_driver.main(FirstGUI_driver.java:11)
    2 frames