Question

Given a Timer object named timer and a TimerTask object named task, which statement runs the task immediately and again every minute?

A. timer.schedule(task, 0, 60000);
B. timer.runNow(task);
C. task.runEveryMinute();
D. task.scheduleAtFixedRate(timer, 0, 60000);

Answer 1

The correct statement is timer.schedule (task, 0, 60000).

Step-by-step explanation:

The statement that runs the task immediately and again every minute is option A: timer.schedule(task, 0, 60000); This statement uses the schedule method of the Timer class and specifies that the task should start immediately (0 milliseconds delay) and repeat every 60,000 milliseconds (1 minute).

The schedule (TimerTask task, Date time) method of Timer class is used to schedule the task for execution at the given time. If the time given is in the past, the task is scheduled at that movement for execution.

Timer and TimerTask are java util classes that we use to schedule tasks in a background thread. Basically, TimerTask is the task to perform, and Timer is the scheduler.

Java Timer object can be created to run the associated tasks as a daemon thread. Timer cancel() method is used to terminate the timer and discard any scheduled tasks, however it doesn't interfere with the currently executing task and let it finish.