Attempt to invoke virtual method ‘…’ on a null object reference
Check intent is null or not before you get data Intent intent=this.getIntent(); if(intent !=null){ // do something you want } example In ClassA: … Read more
nullpointerexception
NullPointerExcetion Native Method Accessor… Hashing Words Issue
This whileloop is strange: while (scanner.hasNextLine()) { String line = scanner.nextLine(); while (line != null) { String word = scanner.next(); addWord(word, linecount); } … Read more