Attempt to invoke virtual method on a null object reference issue
49
What is a NullPointerException, and how do I fix it?
46944
Null pointer Exception - findViewById()
145465
Why can't static_cast be used to down-cast when virtual inheritance is involved?
112328
Error: "an object reference is required for the non-static field, method or property..."
63521
How to pass a nullable type to a P/invoked function
28348
How do I handle null or optional DLL struct parameters
15836
Cannot refer to a non-final variable inside an inner class defined in a different method
81518
Find out what variable is throwing a NullPointerException programmatically
118541
How to pass a default argument value of an instance member to a method?
134746
Where do "pure virtual function call" crashes come from?
35448
Virtual multiple inheritance - final overrider
33103
How come invoking a (static) method on a null reference doesn't throw NullPointerException?
127599
Odd situation for "cannot reference this before supertype constructor has been called"
89755
Why is "throw null" not creating a compilation error in Java?
114816
Is null reference possible?
149666
Why can't a null-reference exception name the object that has a null reference?
2116
IllegalArgumentException or NullPointerException for a null parameter?