Ace Java 2025: Rock Your 'Thinking in Java' Challenge!

Question: 1 / 510

What must be true for a class implementing an interface with a throws declaration?

It must implement all methods defined in the interface

It must throw at least one of the declared exceptions

It can throw any subclass of RuntimeException

It cannot throw checked exceptions not declared in the interface

A class implementing an interface with a throws declaration must be able to handle or declare all checked exceptions that are defined in the interface. Option A is incorrect because implementation of all methods in the interface is not dependent on the throws declaration. Option B is incorrect because throwing an exception is not mandatory but handling or declaring is. Option C is incorrect because any subclass of RuntimeException is not required to be handled or declared. Therefore, option D is the most accurate answer as it correctly identifies what must be true for a class to implement an interface with a throws declaration.

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