java.lang.NullPointerException

Oracle Community | 807541 | 1 decade ago
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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at Calculator.addStudent()
    2. Unknown
      Calculator.main
      1. Calculator.addStudent(Calculator.java:17)
      2. Calculator.main(Calculator.java:38)
      2 frames