What are the Timer and TimerTask classes?

The Timer and TimerTask classes share a common feature in that both work together and have the ability to schedule a task for execution at some future time. Timer is used to schedule a task for execution. The task that is scheduled is an instance of TimerTask. The TimerTask class implements the Runnable interface and hence can be used to create a thread of execution. Its constructor is as follows:

TimerTask()

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