java.lang.NullPointerException

  1. 0

    nullpointerexception while calling a constructor

    Stack Overflow | 3 years ago | Xavier
    java.lang.NullPointerException
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  3. 0

    Exception in thread main - Java Programming Help - KnowCoding.com

    knowcoding.com | 1 year ago
    java.lang.NullPointerException
  4. 0

    Nullpointerexception - Java Programming Help - KnowCoding.com

    knowcoding.com | 1 year ago
    java.lang.NullPointerException

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Root Cause Analysis

  1. java.lang.NullPointerException

    No message provided

    at java.awt.Container.addImpl()
  2. Java RT
    Container.add
    1. java.awt.Container.addImpl(Container.java:1086)
    2. java.awt.Container.add(Container.java:410)
    2 frames
  3. Unknown
    WeightedAverageProgram.main
    1. WeightedAverageProgram.<init>(WeightedAverageProgram.java:61)
    2. WeightedAverageProgram.main(WeightedAverageProgram.java:115)
    2 frames