What does the "abstract" keyword mean in front of a method? A class?

Abstract keyword declares either a method or a class. If a method has a abstract keyword in front of it, it is called abstract method.Abstract method has no body. It has only arguments and return type. Abstract methods act as placeholder methods that are implemented in the subclasses. Abstract classes can't be instantiated.If a class is declared as abstract,no objects of that class can be created.If a class contains any abstract method it must be declared as abstract.

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Aug 28th, 2004
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vmshenoy
Profile Answers by vmshenoy Questions by vmshenoy

Feb 9th, 2006

Abstract simply means that this method has no definition.It simply has retrun type i.e it is declared but not defined.

alpa

Dec 11th, 2006

hi,
Abstract classes can be subclassed and their objects can be created. Implementations can vary for the abstract methods by the subclasses.