java.lang.NullPointerException

Attempt to invoke virtual method 'int java.lang.String.length()' on a null object reference

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  • Attempt to invoke virtual method 'int java.lang.String.length()' on a null object reference
  • Attempt to invoke virtual method 'int java.lang.String.length()' on a null object reference
  • Attempt to invoke virtual method 'int java.lang.String.length()' on a null object reference
  • Stack trace

    • java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.String.length()' on a null object reference at java.io.StringReader.<init>(StringReader.java:47)

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