java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.lang.String.trim()' on a null object reference

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    java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.lang.String.trim()' on a null object reference
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    Attempt to invoke virtual method 'java.lang.String java.lang.String.trim()' on a null object reference

    Stack Overflow | 10 months ago | Rishabh jain
    java.lang.RuntimeException: Unable to start activity ComponentInfo{in.jainrishabh1.noteelite/in.jainrishabh1.noteelite.MapView}: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.lang.String.trim()' on a null object reference

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    Root Cause Analysis

    1. java.lang.NullPointerException

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

      at com.example.hp.marklist.admin$1LoginAsync.onPostExecute()
    2. com.example.hp
      admin$1LoginAsync.onPostExecute
      1. com.example.hp.marklist.admin$1LoginAsync.onPostExecute(admin.java:143)
      2. com.example.hp.marklist.admin$1LoginAsync.onPostExecute(admin.java:81)
      2 frames
    3. Android Platform
      AsyncTask.finish
      1. android.os.AsyncTask.finish(AsyncTask.java:651)
      1 frame