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Which method must be defined by a class implementing the java.lang.Runnable interface?

Correct Answer: public void run()

Explanation:

Option B is correct because in an interface all methods are abstract by default therefore they must be overridden by the implementing class. The Runnable interface only contains 1 method, the void run() method therefore it must be implemented.


Option A and D are incorrect because they are narrowing the access privileges i.e. package(default) access is narrower than public access.


Option C is not method in the Runnable interface therefore it is incorrect.


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