java.lang.NullPointerException

Stack Overflow | cho jung hyun | 7 months ago
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    i can`t understand why NullPointerException happen

    Stack Overflow | 7 months ago | cho jung hyun
    java.lang.NullPointerException

    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at Sound.practice_1.go()
    2. Sound
      practice_1.main
      1. Sound.practice_1.go(practice_1.java:16)
      2. Sound.practice_1.main(practice_1.java:12)
      2 frames