query: attempt to invoke a virtual method on a null object
positive_passages.docid: 49
positive_passages.text: What is a NullPointerException, and how do I fix it?
negative_passages.docid: 79586
negative_passages.text: System.NullPointerException: Attempt to de-reference a null object
negative_passages.docid: 56858
negative_passages.text: Possible to overload null-coalescing operator?
negative_passages.docid: 28348
negative_passages.text: How do I handle null or optional DLL struct parameters
negative_passages.docid: 20239
negative_passages.text: How do I use reflection to invoke a private method?
negative_passages.docid: 87642
negative_passages.text: How to chain method on a newly created object?
negative_passages.docid: 96453
negative_passages.text: Caught Throwable or Exception is null
negative_passages.docid: 45869
negative_passages.text: Why null cast a parameter?
negative_passages.docid: 64332
negative_passages.text: avoiding null reference exceptions
negative_passages.docid: 8808
negative_passages.text: Strange Java null behavior in Method Overloading
negative_passages.docid: 8738
negative_passages.text: Should a retrieval method return 'null' or throw an exception when it can't produce the return value?
negative_passages.docid: 115292
negative_passages.text: virtual function calls in constructor and destructor
negative_passages.docid: 8533
negative_passages.text: How do I invoke a Java method when given the method name as a string?
negative_passages.docid: 85266
negative_passages.text: Unit testing a method that calls another method
negative_passages.docid: 96843
negative_passages.text: What will happen when I call a member function on a NULL object pointer?
negative_passages.docid: 73499
negative_passages.text: Why is Default constructor called in virtual inheritance?
negative_passages.docid: 92446
negative_passages.text: C#: How to pass null to a function expecting a ref?