In this tutorial, we have learned about class. So, the implementation of TimerTask class is a thread. It implements the Runnable interface because the instance of this class is intended to be run by the threads. ("Purge " + timer.purge()) Īnswer: The Timer class in Java belongs to package that provides a facility for threads to schedule a taskthat will be executed in the future in a background thread.Īnswer: Java Timer is a class whose object is associated with a background thread.Īnswer: You can use the cancel() method if you want to terminate this Timer and also cancel any currently scheduled tasks.Īnswer: It provides a facility for threads to schedule a task that will be executed in the future in a background thread.Īnswer: TimerTask is an abstract class. For this, we have simply called the method purge with the help of a reference variable. Now that we have come out of the loop, we have tried to return the number of tasks removed from the queue. This will allow the control to come out of the loop as soon as ‘i’ becomes 3. If you compare the example given for cancel() and purge() methods, you will notice that in the below example of the purge() method, a break statement has been put just after the cancel() method.
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* schedule() method to schedule the execution with start time run() method to carry out the action of the task Now we will move on to the example of the purge() method given below. In this example, we will see that the statement inside for loop will keep on executing even after the first “Stop calling” statement is encountered i.e. As we know, the cancel() method is used to terminate this Timer and also discards any scheduled tasks but it does not interfere with any currently executing task or action. Here is an example of the Java Timer class that includes the functionality of the cancel() method. * void schedule(TimerTask task, Date firstTime, long period) * Schedule() method calls for timer class. n() method will be used to perform the action of the task We explicitly need to stop the execution otherwise the run() method will keep on executing. In the main method, we have used the “void schedule(TimerTask task, Date firstTime, long period)” variation of the schedule() method to execute the run() method as many times as we want. The run() method of TimerTask class is used to print the number of times the execution is done. Inside this TimerTask, we have initialized a variable that will be used to check the number of counts of the execution. Here is an example of the Java Timer that includes the functionality of scheduling the specified task for repeated execution with a fixed delay and the task has some specified start time.įirst of all, we have declared a Helper class that is extending TimerTask class.
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Timer(String name, boolean isDaemon): It creates a new Timer whose thread has a name specified, and also it is defined to run as a daemon thread. Timer(String name): It creates a new Timer whose thread has already given a name. Timer(boolean isDaemon): It creates a new Timer whose thread has been specified to run as daemon thread. The below constructors are the variations of it. Timer(): Every time, it creates a new Timer. All the tasks of a Java Timer class are stored in the binary heap.Įxtends Object Constructors With Description Also, many threads can share a single Java Timer class object, thereby making it thread-safe.