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Mary McCallum3,301 Points
What is a Null Pointer Exception?
This course runs through the examples of using exceptions in unit testing. But so far it has not explained clearly what exactly Exceptions are or what a Null Pointer Exception is? Can somebody explain? I'm going through the motions of doing the exercises but it hasn't clearly explained the theory behind it.
This is an Exception that is thrown when you are trying to do something with a null value. This could be trying to take the length of a
null object or trying to access the field of a
I hope this helps!