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Root Cause Analysis

  1. java.lang.NumberFormatException

    For input string: ""

    at java.lang.NumberFormatException.forInputString()
  2. Java RT
    Integer.parseInt
    1. java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
    2. java.lang.Integer.parseInt(Integer.java:504)
    3. java.lang.Integer.parseInt(Integer.java:527)
    3 frames
  3. Unknown
    calc$1.actionPerformed
    1. calc.jButton1ActionPerformed(calc.java:132)
    2. calc.access$000(calc.java:11)
    3. calc$1.actionPerformed(calc.java:53)
    3 frames
  4. Java RT
    EventDispatchThread.run
    1. javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
    2. javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
    3. javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
    4. javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
    5. javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
    6. java.awt.Component.processMouseEvent(Component.java:6505)
    7. javax.swing.JComponent.processMouseEvent(JComponent.java:3320)
    8. java.awt.Component.processEvent(Component.java:6270)
    9. java.awt.Container.processEvent(Container.java:2229)
    10. java.awt.Component.dispatchEventImpl(Component.java:4861)
    11. java.awt.Container.dispatchEventImpl(Container.java:2287)
    12. java.awt.Component.dispatchEvent(Component.java:4687)
    13. java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
    14. java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
    15. java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
    16. java.awt.Container.dispatchEventImpl(Container.java:2273)
    17. java.awt.Window.dispatchEventImpl(Window.java:2719)
    18. java.awt.Component.dispatchEvent(Component.java:4687)
    19. java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735)
    20. java.awt.EventQueue.access$200(EventQueue.java:103)
    21. java.awt.EventQueue$3.run(EventQueue.java:694)
    22. java.awt.EventQueue$3.run(EventQueue.java:692)
    23. java.security.AccessController.doPrivileged(Native Method)
    24. java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
    25. java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
    26. java.awt.EventQueue$4.run(EventQueue.java:708)
    27. java.awt.EventQueue$4.run(EventQueue.java:706)
    28. java.security.AccessController.doPrivileged(Native Method)
    29. java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
    30. java.awt.EventQueue.dispatchEvent(EventQueue.java:705)
    31. java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
    32. java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
    33. java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
    34. java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
    35. java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
    36. java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
    36 frames