java.lang.NullPointerException

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    java.lang.RuntimeException: Unable to resume activity {com.ourThesis.junieNegentien2015/com.ourThesis.junieNegentien2015.MainActivity}: java.lang.NullPointerException

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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at dbWrapper.Select()
    2. Unknown
      DBTest.main
      1. dbWrapper.Select(dbWrapper.java:57)
      2. DBTest.main(DBTest.java:13)
      2 frames