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Root Cause Analysis

  1. java.lang.NullPointerException

    No message provided

    at java.io.Reader.<init>()
  2. Java RT
    Scanner.<init>
    1. java.io.Reader.<init>(Unknown Source)
    2. java.io.InputStreamReader.<init>(Unknown Source)
    3. java.util.Scanner.<init>(Unknown Source)
    3 frames
  3. Unknown
    MyMain.main
    1. MyMain.main(QuestionMain.java:27)
    1 frame