java.lang.NullPointerException

Coderanch | Maureen Charlton | 1 decade ago
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    alternative to nested if in TreeMap values

    Coderanch | 1 decade ago | Maureen Charlton
    java.lang.NullPointerException
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    Null pointer Exception roster.delete(nationalID);

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Root Cause Analysis

  1. java.lang.NullPointerException

    No message provided

    at java.util.TreeMap.compare()
  2. Java RT
    TreeMap.remove
    1. java.util.TreeMap.compare(Unknown Source)
    2. java.util.TreeMap.getEntry(Unknown Source)
    3. java.util.TreeMap.remove(Unknown Source)
    3 frames
  3. Unknown
    TestApp.main
    1. VehicleDB.store(VehicleDB.java:121)
    2. TestApp.main(TestApp.java:365)
    2 frames