java.lang.NullPointerException

Stack Overflow | Koudela | 5 months ago
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    How to enforce a constructor to use the classes own methods in java

    Stack Overflow | 5 months ago | Koudela
    java.lang.NullPointerException

    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at testingJava.SubClass.set()
    2. testingJava
      MainClass.main
      1. testingJava.SubClass.set(SubClass.java:19)
      2. testingJava.SuperClass.<init>(SuperClass.java:7)
      3. testingJava.SubClass.<init>(SubClass.java:10)
      4. testingJava.MainClass.main(MainClass.java:9)
      4 frames