Scheduling Repeated Tasks with Timer in Java | Timer and TimerTask in Java

Published: 01 February 2019
on channel: Ram N Java

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In this tutorial, we'll explore how to schedule a task for repeated execution using the `Timer` class in Java. The `Timer` class allows you to schedule tasks to be executed at specified times or after specified delays, including repeated executions at fixed intervals.

To schedule a task for repeated execution, beginning at a specified time, you can use the `schedule(TimerTask task, Date firstTime, long period)` method of the `Timer` class. This method schedules the specified task to run at the specified time and repeats at the specified interval.

Here's a breakdown of the parameters:
`TimerTask task`: The task to be executed.
`Date firstTime`: The time at which the task should first be executed.
`long period`: The interval between consecutive executions of the task, in milliseconds.

Here's a sample code snippet demonstrating how to use the `schedule` method to schedule a task for repeated execution:

```java
import java.util.Timer;
import java.util.TimerTask;
import java.util.Date;

public class RepeatedTaskExample {
public static void main(String[] args) {
Timer timer = new Timer();

TimerTask task = new TimerTask() {
@Override
public void run() {
// Task logic goes here
System.out.println("Task executed at: " + new Date());
}
};

// Schedule the task to run every 5 seconds, starting now
timer.schedule(task, new Date(), 5000);
}
}
```

In this example, the task will be executed every 5 seconds, starting immediately. The `run` method of the `TimerTask` implementation contains the logic that will be executed each time the task is run.

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