java.lang.NullPointerException

Coderanch | sabin mash | 6 years ago
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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at Library.inStock()
    2. Unknown
      Library.main
      1. Library.inStock(Library.java:51)
      2. Library.borrowBook(Library.java:33)
      3. Library.main(Library.java:103)
      3 frames