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a guest Dec 3rd, 2010 37 Never
  1. Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
  2.         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  3.         at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
  4.         at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
  5.         at java.lang.reflect.Method.invoke(Unknown Source)
  6.         at intro.JFrameExt.jtfActionPerformed(JFrameExt.java:336)
  7.         at intro.JFrameExt$3.actionPerformed(JFrameExt.java:183)
  8.         at javax.swing.JTextField.fireActionPerformed(Unknown Source)
  9.         at javax.swing.JTextField.postActionEvent(Unknown Source)
  10.         at javax.swing.JTextField$NotifyAction.actionPerformed(Unknown Source)
  11.         at javax.swing.SwingUtilities.notifyAction(Unknown Source)
  12.         at javax.swing.JComponent.processKeyBinding(Unknown Source)
  13.         at javax.swing.JComponent.processKeyBindings(Unknown Source)
  14.         at javax.swing.JComponent.processKeyEvent(Unknown Source)
  15.         at java.awt.Component.processEvent(Unknown Source)
  16.         at java.awt.Container.processEvent(Unknown Source)
  17.         at java.awt.Component.dispatchEventImpl(Unknown Source)
  18.         at java.awt.Container.dispatchEventImpl(Unknown Source)
  19.         at java.awt.Component.dispatchEvent(Unknown Source)
  20.         at java.awt.KeyboardFocusManager.redispatchEvent(Unknown Source)
  21.         at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(Unknown Source)
  22.         at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(Unknown Source)
  23.         at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(Unknown Source)
  24.         at java.awt.DefaultKeyboardFocusManager.dispatchEvent(Unknown Source)
  25.         at java.awt.Component.dispatchEventImpl(Unknown Source)
  26.         at java.awt.Container.dispatchEventImpl(Unknown Source)
  27.         at java.awt.Window.dispatchEventImpl(Unknown Source)
  28.         at java.awt.Component.dispatchEvent(Unknown Source)
  29.         at java.awt.EventQueue.dispatchEvent(Unknown Source)
  30.         at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
  31.         at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
  32.         at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
  33.         at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
  34.         at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
  35.         at java.awt.EventDispatchThread.run(Unknown Source)
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