A-Level Computer Science Practice Questions - A-Level Computer Science Exam

An abstract class in Java contains at least one abstract method. Which statement about abstract classes is correct?

Abstract classes can be instantiated directly using the new operator Abstract classes cannot contain any concrete (implemented) methods Abstract classes can be subclassed, and concrete subclasses must implement all abstract methods Abstract classes are identical to interfaces in every respect

Correct Answer:

Abstract classes can be subclassed, and concrete subclasses must implement all abstract methods

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