java.lang.NullPointerException:

Coderanch | Stephen Huey | 1 decade ago
  1. 0

    Trouble with subclassing??

    Coderanch | 1 decade ago | Stephen Huey
    java.lang.NullPointerException:
  2. 0

    Trouble with subclassing??

    Coderanch | 1 decade ago | David Harkness
    java.lang.NullPointerException
  3. 0
    samebug tip
    It is a JDK bug, no workaround currently.
    via GitHub by jroper
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  5. 0
    samebug tip
    Some of the parametes ar enull
  6. 0
    samebug tip
    Initialize the variable before calling a method on it.

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    Root Cause Analysis

    1. java.lang.NullPointerException

      at ListNode.InsertAfter()
    2. Unknown
      NameList.main
      1. ListNode.InsertAfter(ListNode.java:12)
      2. NameList.AddToFront(NameList.java:60)
      3. NameList.Insert(NameList.java:40)
      4. NameList.main(NameList.java:109)
      4 frames
    3. Java RT
      Method.invoke
      1. sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      2. sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
      3. sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
      4. java.lang.reflect.Method.invoke(Unknown Source)
      4 frames