Core Java · interview question
Which of the following is true about a class that implements an interface in Java?
Multiple choiceEasychapter-5-curatedpremiumcore-javacode-reading-with-related-types
Answer and explanation
Correct answer
A. It must provide implementations for all methods declared in the interface.
Why
A class that implements an interface must provide concrete implementations for all the methods declared within the interface. Otherwise, the class must be declared abstract.
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