query: i can`t understand why NullPointerException happen
positive_passages.docid: 49
positive_passages.text: What is a NullPointerException, and how do I fix it?
negative_passages.docid: 73285
negative_passages.text: Null Pointer Exception in XMl Parsing
negative_passages.docid: 66284
negative_passages.text: NullPointerException when Creating an Array of objects
negative_passages.docid: 81518
negative_passages.text: Find out what variable is throwing a NullPointerException programmatically
negative_passages.docid: 48512
negative_passages.text: Placing null at the end of the List
negative_passages.docid: 55274
negative_passages.text: Java: Exception itself is null
negative_passages.docid: 88920
negative_passages.text: Is using NULL references OK?
negative_passages.docid: 24887
negative_passages.text: java.lang.NullPointerException at javax.faces.webapp.UIComponentClassicTagBase.setJspId
negative_passages.docid: 6882
negative_passages.text: try catch exception always returns null
negative_passages.docid: 108336
negative_passages.text: Nullable Object must have a value #2
negative_passages.docid: 47674
negative_passages.text: How to pass an object from one activity to another on Android
negative_passages.docid: 124773
negative_passages.text: NullPointerException when calling service in onResume
negative_passages.docid: 110077
negative_passages.text: Is it good practice to NULL a pointer after deleting it?
negative_passages.docid: 20020
negative_passages.text: NullPointerException accessing views in onCreate()
negative_passages.docid: 73034
negative_passages.text: StringBuilder append() and null values
negative_passages.docid: 81624
negative_passages.text: Is returning null bad design?
negative_passages.docid: 11458
negative_passages.text: NullReferenceException in Unity