Java Timer

1. Schedule a One-Time Task With Timer in Java
2. Schedule a Repeating Timer in Java

Timer is a service available in the Java programming language that allows users to schedule a future event. These future events can be one time or repeated at regular time intervals. There can be triggers that we use to initiate future events.

Schedule a One-Time Task With Timer in Java

import java.util.Timer;
import java.util.TimerTask;

public class StopWatch {
  Timer timer;

  public StopWatch(int seconds) {
    timer = new Timer();
    timer.schedule(new StopTask(), seconds * 1000);
  }

  public static void main(String[] args) {
    new StopWatch(10);
    System.out.println("StopWatch Started.");
  }

  class StopTask extends TimerTask {
    public void run() {
      System.out.println("Time Up!");
      timer.cancel();
    }
  }
}

Below is the never-ending outcome of the future event scheduled.

Running!
Running!
Running!
Running!