java.lang.NullPointerException: Attempt to invoke virtual method 'boolean java.util.ArrayList.add(java.lang.Object)' on a null object reference

Stack Overflow | kunal nikam | 6 months ago
  1. 0

    When i run my App it unfortunatly stop how to fix it

    Stack Overflow | 6 months ago | kunal nikam
    java.lang.NullPointerException: Attempt to invoke virtual method 'boolean java.util.ArrayList.add(java.lang.Object)' on a null object reference
  2. 0
    The parsed JSON does not contains the requested field.
  3. 0
    The resource was accessed after it was dismissed.
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  5. 0

    java,android,android-listview,arraylist,baseadapter , NullPointerException when adding an object to ArrayList in Android [duplicate]

    databasefaq.com | 1 year ago
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.rt.droid.baseadapter01/com.rt.droid.baseadapter01.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'boolean java.util.ArrayList.add(java.lang.Object)' on a null object reference
  6. 0

    java null pointer exception but has already initialized

    Stack Overflow | 3 weeks ago | ihsan.gaozp
    java.lang.NullPointerException: Attempt to invoke virtual method 'boolean' java.util.ArrayList.add(java.lang.Object)' on a null object reference

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    Root Cause Analysis

    1. java.lang.NullPointerException

      Attempt to invoke virtual method 'boolean java.util.ArrayList.add(java.lang.Object)' on a null object reference

      at com.example.owner.json.MainActivity$1$1.onResponse()
    2. com.example.owner
      MainActivity$1$1.onResponse
      1. com.example.owner.json.MainActivity$1$1.onResponse(MainActivity.java:74)
      2. com.example.owner.json.MainActivity$1$1.onResponse(MainActivity.java:55)
      2 frames
    3. Android-Volley Library
      ExecutorDelivery$ResponseDeliveryRunnable.run
      1. com.android.volley.toolbox.StringRequest.deliverResponse(StringRequest.java:60)
      2. com.android.volley.toolbox.StringRequest.deliverResponse(StringRequest.java:30)
      3. com.android.volley.ExecutorDelivery$ResponseDeliveryRunnable.run(ExecutorDelivery.java:99)
      3 frames
    4. Android Platform
      ActivityThread.main
      1. android.os.Handler.handleCallback(Handler.java:739)
      2. android.os.Handler.dispatchMessage(Handler.java:95)
      3. android.os.Looper.loop(Looper.java:135)
      4. android.app.ActivityThread.main(ActivityThread.java:5343)
      4 frames
    5. Java RT
      Method.invoke
      1. java.lang.reflect.Method.invoke(Native Method)
      2. java.lang.reflect.Method.invoke(Method.java:372)
      2 frames
    6. Android
      ZygoteInit.main
      1. com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:905)
      2. com.android.internal.os.ZygoteInit.main(ZygoteInit.java:700)
      2 frames