query: Attempt to invoke virtual method '.isPlaying()' on a null object reference
positive_passages.docid: 49
positive_passages.text: What is a NullPointerException, and how do I fix it?
negative_passages.docid: 127452
negative_passages.text: Why is typeof null "object"?
negative_passages.docid: 142557
negative_passages.text: Calling pure virtual function in constructor gives an error
negative_passages.docid: 139395
negative_passages.text: com.sun.istack.SAXException2 : Instance ... is substituting "java.lang.Object", but ... is bound to an anonymous type
negative_passages.docid: 19902
negative_passages.text: Shortcut for "null if object is null, or object.member if object is not null"
negative_passages.docid: 85964
negative_passages.text: Android: ClassNotFoundException when passing serializable object to Activity
negative_passages.docid: 73120
negative_passages.text: Nullpointerexception when trying to send data from activity to class
negative_passages.docid: 48235
negative_passages.text: Setting Objects to Null/Nothing after use in .NET
negative_passages.docid: 123381
negative_passages.text: How do I use IValidatableObject?
negative_passages.docid: 62797
negative_passages.text: Calling virtual method in base class constructor
negative_passages.docid: 138618
negative_passages.text: How to resolve NullPointerException error in my below POM code?
negative_passages.docid: 95
negative_passages.text: Calling virtual functions inside constructors
negative_passages.docid: 81624
negative_passages.text: Is returning null bad design?
negative_passages.docid: 114049
negative_passages.text: IllegalMonitorStateException in code
negative_passages.docid: 98227
negative_passages.text: Any alternative to calling getGraphics() which is returning null
negative_passages.docid: 124471
negative_passages.text: Comparing nullable column values using "IS NULL" versus "= NULL"
negative_passages.docid: 146476
negative_passages.text: Java: Why aren't NullPointerExceptions called NullReferenceExceptions?