query: java.lang.NullPointerException in Main Activity
positive_passages.docid: 49
positive_passages.text: What is a NullPointerException, and how do I fix it?
negative_passages.docid: 6882
negative_passages.text: try catch exception always returns null
negative_passages.docid: 65143
negative_passages.text: Eclipse Activity Not Working
negative_passages.docid: 9605
negative_passages.text: Java - Could not find the main class
negative_passages.docid: 91260
negative_passages.text: Sending data back to the Main Activity in Android
negative_passages.docid: 24887
negative_passages.text: java.lang.NullPointerException at javax.faces.webapp.UIComponentClassicTagBase.setJspId
negative_passages.docid: 77648
negative_passages.text: How to get the result of OnPostExecute() to main activity because AsyncTask is a separate class?
negative_passages.docid: 79586
negative_passages.text: System.NullPointerException: Attempt to de-reference a null object
negative_passages.docid: 85964
negative_passages.text: Android: ClassNotFoundException when passing serializable object to Activity
negative_passages.docid: 70532
negative_passages.text: NullReferenceException after POST
negative_passages.docid: 132398
negative_passages.text: What is null in Java?
negative_passages.docid: 101449
negative_passages.text: Using methods from another class in the main?
negative_passages.docid: 20209
negative_passages.text: Exception in thread "main" java.lang.NoClassDefFoundError: wrong name
negative_passages.docid: 80631
negative_passages.text: NullPointerException but compiling?
negative_passages.docid: 81565
negative_passages.text: getClass().getResource() always returning null
negative_passages.docid: 146476
negative_passages.text: Java: Why aren't NullPointerExceptions called NullReferenceExceptions?
negative_passages.docid: 98080
negative_passages.text: Android: Cannot invoke toString() on the primitive type int