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Explain What type of methods an interface contain by default?

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What type of methods an interface contain by default? (a) abstract (b) static (c) final (d) private I had been asked this question in exam. I would like to ask this question from Interfaces in division Interfaces & Packages of Java Select the correct answer from above options

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Right choice is (a) abstract Explanation: By default, interface contains abstract methods. The abstract methods need to be implemented by concrete classes.

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