java.lang.NullPointerException

oracle.com | 9 months ago
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Root Cause Analysis

  1. java.lang.NullPointerException

    No message provided

    at javax.swing.LayoutComparator.compare()
  2. Java RT
    Component.transferFocus
    1. javax.swing.LayoutComparator.compare(Unknown Source)
    2. java.util.Collections.indexedBinarySearch(Unknown Source)
    3. java.util.Collections.binarySearch(Unknown Source)
    4. javax.swing.SortingFocusTraversalPolicy.getComponentAfter(Unknown Source)
    5. javax.swing.LayoutFocusTraversalPolicy.getComponentAfter(Unknown Source)
    6. java.awt.Component.nextFocusHelper(Unknown Source)
    7. java.awt.Container.nextFocusHelper(Unknown Source)
    8. java.awt.Component.nextFocus(Unknown Source)
    9. java.awt.Component.transferFocus(Unknown Source)
    9 frames
  3. oracle.ewt.lwAWT
    AbstractButton.processFocusEvent
    1. oracle.ewt.lwAWT.LWComponent.processFocusEvent(Unknown Source)
    2. oracle.ewt.lwAWT.AbstractButton.processFocusEvent(Unknown Source)
    2 frames
  4. oracle.ewt.button
    PushButton.processFocusEvent
    1. oracle.ewt.button.PushButton.processFocusEvent(Unknown Source)
    1 frame
  5. Java RT
    Container.processEvent
    1. java.awt.Component.processEvent(Unknown Source)
    2. java.awt.Container.processEvent(Unknown Source)
    2 frames
  6. oracle.ewt.lwAWT
    LWComponent.processEventImpl
    1. oracle.ewt.lwAWT.LWComponent.processEventImpl(Unknown Source)
    1 frame
  7. oracle.ewt.button
    PushButton.processEventImpl
    1. oracle.ewt.button.PushButton.processEventImpl(Unknown Source)
    1 frame
  8. oracle.ewt.lwAWT
    LWComponent.processEvent
    1. oracle.ewt.lwAWT.LWComponent.redispatchEvent(Unknown Source)
    2. oracle.ewt.lwAWT.LWComponent.processEvent(Unknown Source)
    2 frames
  9. Java RT
    KeyboardFocusManager.redispatchEvent
    1. java.awt.Component.dispatchEventImpl(Unknown Source)
    2. java.awt.Container.dispatchEventImpl(Unknown Source)
    3. java.awt.Component.dispatchEvent(Unknown Source)
    4. java.awt.KeyboardFocusManager.redispatchEvent(Unknown Source)
    4 frames