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What will happen if we provide concrete implementation of method in interface?

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What will happen if we provide concrete implementation of method in interface? (a) The concrete class implementing that method need not provide implementation of that method (b) Runtime exception is thrown (c) Compilation failure (d) Method not found exception is thrown I had been asked this question during a job interview. This interesting question is from Interfaces in portion Interfaces & Packages of Java Select the correct answer from above options JavaScript questions and answers, JavaScript questions pdf, JavaScript question bank, JavaScript questions and answers pdf, mcq on JavaScript pdf, JavaScript questions and solutions, JavaScript mcq Test , Interview JavaScript questions, JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)

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Right answer is (c) Compilation failure The best explanation: The methods of interfaces are always abstract. They provide only method definition.

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