java.lang.NullPointerException

Coderanch | Zack Brown | 5 years ago
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    Exception in thread "main" java.lang.NullPointerException

    Coderanch | 5 years ago | Zack Brown
    java.lang.NullPointerException

    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at Viewer.toString()
    2. Unknown
      Viewer.toString
      1. Viewer.toString(Viewer.java:88)
      1 frame