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    java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setText(java.lang.CharSequence)' on a null object reference
        at parsing.json.com.jsonparsindemo.MainActivity$JSONTask.onPostExecute(MainActivity.java:87)
        at parsing.json.com.jsonparsindemo.MainActivity$JSONTask.onPostExecute(MainActivity.java:39)
        at android.os.AsyncTask.finish(AsyncTask.java:651)