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Tag Archives: abstract
Class with abstract methods must be declared abstract
Unlike a concrete class, any class with abstract methods cannot be instantiated. A class with abstract methods must be declared as abstract itself. For example,
Abstract and concrete methods (Java programming)
Methods in a class can be declared as being abstract or concrete. Abstract methods have no method body (no implementation details) whereas concrete methods have a method body. The following example shows an abstract class with one abstract and one … Continue reading
What is a concrete class? (Java programming)
What is a concrete class? — You might be asked this question in the Sun Certified Java Associate (SCJA) exam. A concrete class is one that can be used to instantiate objects. For example, An abstract class is not a … Continue reading