java.lang.NullPointerException

Coderanch | Craig E. Lewis | 4 years ago
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  1. 0

    Problem with SimpleDotComGame from the book Head First Java.

    Coderanch | 4 years ago | Craig E. Lewis
    java.lang.NullPointerException

    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at SimpleDotCom.checkYourself()
    2. Unknown
      SimpleDotComGame.main
      1. SimpleDotCom.checkYourself(SimpleDotCom.java:13)
      2. SimpleDotComGame.main(SimpleDotComGame.java:11)
      2 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
    4. edu.rice.cs
      JavacCompiler.runCommand
      1. edu.rice.cs.drjava.model.compiler.JavacCompiler.runCommand(JavacCompiler.java:272)
      1 frame