Assertion: An interface in Java contains abstract and non-abstract methods. Reason: All methods in an interface must be implemented by any class that extends this interface.

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KollegeApply · Accepted Answer

Assertion is true and Reason is false. Explanation: • Assertion is True: In modern Java (since Java 8), interfaces are no longer limited to abstract methods. They can now contain non-abstract methods, specifically default, static, and (since Java 9) private methods that have a defined body. • Reason is False: Not all methods in an interface must be implemented. Default and static methods already have an implementation, so the class implementing the interface is not required to provide one. Additionally, a class implements an interface; it does not "extend" it (interfaces extend other interfaces).

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