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Which of these interfaces is implemented by TimerTask class?

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Which of these interfaces is implemented by TimerTask class? (a) Runnable (b) Thread (c) Observer (d) ThreadCount I got this question by my college director while I was bunking the class. This interesting question is from Observable & Timer Class in section java.util – More Utility Classes 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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The correct answer is (a) Runnable Explanation: None.

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