Discussion :: Inner Classes
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Which statement is true about a static nested class?
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A.
You must have a reference to an instance of the enclosing class in order to instantiate it.
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B.
It does not have access to nonstatic members of the enclosing class.
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C.
It's variables and methods must be static.
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D.
It must extend the enclosing class.
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Answer : Option B
Explanation :
Option B is correct because a static nested class is not tied to an instance of the enclosing class, and thus can't access the nonstatic members of the class (just as a static method can't access nonstatic members of a class).
Option A is incorrect because static nested classes do not need (and can't use) a reference to an instance of the enclosing class.
Option C is incorrect because static nested classes can declare and define nonstatic members.
Option D is wrong because it just is. There's no rule that says an inner or nested class has to extend anything.
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