An abstract class cannot have instance data and non-abstract methods.
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Q17: Polymorphism specifically enables the creation of programs
Q18: When used correctly,polymorphism will never require changes
Q19: The major drawback to polymorphically designed programs
Q20: Polymorphism involves:
A) the same message sent to
Q22: Assigning a derived class reference to a
Q23: You may define implementations for abstract methods
Q24: Consider the abstract class below:
Public abstract class
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