java.lang.NullPointerException

Coderanch | Junilu Lacar | 1 decade ago
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    Coderanch | 1 decade ago | Junilu Lacar
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    Why does String.valueOf(null) throw a NullPointerException?

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    How to effectively handle NullPointerException in java - HowToDoInJava

    howtodoinjava.com | 1 year ago
    java.lang.NullPointerException

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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at java.lang.String.<init>()
    2. Java RT
      String.valueOf
      1. java.lang.String.<init>(String.java:219)
      2. java.lang.String.valueOf(String.java:1961)
      2 frames
    3. Unknown
      Q1.main
      1. Q1.q2(Q1.java:18)
      2. Q1.main(Q1.java:8)
      2 frames