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When do you absolutely have to declare a class as abstract?

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Question:
When do you absolutely have to declare a class as abstract?

Question: When do you absolutely have to declare a class as abstract?


Answer
absolutely have to declare a class as abstract :- When at least one of the methods in the class is abstract. When the class itself is inherited from an abstract class, but not all base abstract methods have been over-ridden.

By:kamal
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When do you absolutely have to declare a class as abstract?

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Question: When do you absolutely have to declare a class as abstract?

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