java.lang.NullPointerException: Attempt to invoke interface method 'boolean java.sql.ResultSet.next()' on a null object reference

Stack Overflow | Nikhil Arya | 8 months ago
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    Issues with linking android with postgresql using jdbc driver

    Stack Overflow | 8 months ago | Nikhil Arya
    java.lang.NullPointerException: Attempt to invoke interface method 'boolean java.sql.ResultSet.next()' on a null object reference

    Root Cause Analysis

    1. java.lang.NullPointerException

      Attempt to invoke interface method 'boolean java.sql.ResultSet.next()' on a null object reference

      at com.example.nikhil.soundofmusic.DatabaseConnectivity.onPostExecute()
    2. com.example.nikhil
      DatabaseConnectivity.onPostExecute
      1. com.example.nikhil.soundofmusic.DatabaseConnectivity.onPostExecute(MainActivity.java:157)
      2. com.example.nikhil.soundofmusic.DatabaseConnectivity.onPostExecute(MainActivity.java:123)
      2 frames
    3. Android Platform
      ActivityThread.main
      1. android.os.AsyncTask.finish(AsyncTask.java:636)
      2. android.os.AsyncTask.access$500(AsyncTask.java:177)
      3. android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:653)
      4. android.os.Handler.dispatchMessage(Handler.java:102)
      5. android.os.Looper.loop(Looper.java:135)
      6. android.app.ActivityThread.main(ActivityThread.java:5254)
      6 frames
    4. Java RT
      Method.invoke
      1. java.lang.reflect.Method.invoke(Native Method)
      2. java.lang.reflect.Method.invoke(Method.java:372)
      2 frames
    5. Android
      ZygoteInit.main
      1. com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
      2. com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
      2 frames