java.lang.NumberFormatException: empty String

Oracle Community | 807595 | 1 decade ago
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Root Cause Analysis

  1. java.lang.NumberFormatException

    empty String

    at java.lang.FloatingDecimal.readJavaFormatString()
  2. Java RT
    Double.parseDouble
    1. java.lang.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:989)
    2. java.lang.Double.parseDouble(Double.java:184)
    2 frames
  3. Unknown
    StudentRecord$ChoiceListener.actionPerformed
    1. StudentRecord$ChoiceListener.actionPerformed(StudentRecordSystem.java:139)
    1 frame
  4. Java RT
    EventDispatchThread.run
    1. javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1450)
    2. javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(AbstractButton.java:1504)
    3. javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:378)
    4. javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:250)
    5. javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:216)
    6. java.awt.Component.processMouseEvent(Component.java:3715)
    7. java.awt.Component.processEvent(Component.java:3544)
    8. java.awt.Container.processEvent(Container.java:1164)
    9. java.awt.Component.dispatchEventImpl(Component.java:2593)
    10. java.awt.Container.dispatchEventImpl(Container.java:1213)
    11. java.awt.Component.dispatchEvent(Component.java:2497)
    12. java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:2451)
    13. java.awt.LightweightDispatcher.processMouseEvent(Container.java:2216)
    14. java.awt.LightweightDispatcher.dispatchEvent(Container.java:2125)
    15. java.awt.Container.dispatchEventImpl(Container.java:1200)
    16. java.awt.Window.dispatchEventImpl(Window.java:926)
    17. java.awt.Component.dispatchEvent(Component.java:2497)
    18. java.awt.EventQueue.dispatchEvent(EventQueue.java:339)
    19. java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:131)
    20. java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:98)
    21. java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
    22. java.awt.EventDispatchThread.run(EventDispatchThread.java:85)
    22 frames