java.lang.NullPointerException

onjava.com | 7 months ago
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    java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.View android.view.Window.findViewById(int)' on a null object reference 11-03 21:55:33.060 2043-2043/uk.ac.city.acnh478.courseworkproject E/AndroidRuntime: at android.app.Activity.findViewById(Activity.java:2090) 11-03 21:55:33.060 2043-2043/uk.ac.city.acnh478.courseworkproject E/AndroidRuntime: at uk.ac.city.acnh478.courseworkproject.activityresultsscreenActivity.<init>(activityresultsscreenActivity.java:16)

    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at javaxml2.CDCatalog.addCD()
    2. javaxml2
      CDCatalog.<init>
      1. javaxml2.CDCatalog.addCD(CDCatalog.java:24)
      2. javaxml2.CDCatalog.<init>(CDCatalog.java:14)
      2 frames
    3. Java RT
      Class.newInstance
      1. java.lang.Class.newInstance0(Native Method)
      2. java.lang.Class.newInstance(Class.java:237)
      2 frames