Answer the following statements true (T) or false (F)
1) An interface cannot declare any instance variables.
2) Establishing the relationship between a listener and the component it listens to is accomplished using polymorphism.
3) A reference variable can refer to an object of a child class, but not any further down the inheritance hierarchy.
4) Polymorphism via inheritance requires that all classes in the inheritance hierarchy are concrete.
5) An interface name may be used as a reference type.
1) T
2) T
3) F
4) F
5) T
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Answer the following statement true (T) or false (F)
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Answer the following statement true (T) or false (F)
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