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Which of these methods is used to notify observer the change in observed object?

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Which of these methods is used to notify observer the change in observed object?

(a) update()

(b) notify()

(c) check()

(d) observed()

I had been asked this question in a national level competition.

Query is from Observable & Timer Class in portion java.util – More Utility Classes of Java

1 Answer

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Best answer
Right choice is (a) update()

The best explanation: None.

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