True or false? An object of a class that implements an interface may be thought of as an object of that interface type.
Answer: True
Showing posts with label JAVA. Show all posts
Showing posts with label JAVA. Show all posts
True or false? If a superclass declares an abstract method, a subclass must implement that method.
True or false? If a superclass declares an abstract method, a subclass must implement that method.
Answer: False
True or false? Invoking a subclass-only method through a subclass variable is not allowed.
True or false? Invoking a subclass-only method through a subclass variable is not allowed.
Answer: False
True or false? All methods in an abstract class must be declared as abstract methods.
True or false? All methods in an abstract class must be declared as abstract methods.
Answer: False
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