java.lang.NullPointerException

Coderanch | Colin Gebler | 4 years ago
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    Why does this throw a NullPointerException?

    Coderanch | 4 years ago | Colin Gebler
    java.lang.NullPointerException

    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at PhythagoGUI.actionPerformed()
    2. Unknown
      PhythagoGUI.actionPerformed
      1. PhythagoGUI.actionPerformed(PhythagoGUI.java:94)
      1 frame