Program/Source Code:

The source code to sleep a thread is given below. The given program is compiled and executed successfully.

// Java program to sleep a thread

class MyThread implements Runnable {
  public void run() {
    int i = 0;

    try {
      for (i = 1; i <= 3; i++) {
        System.out.println("Thread " + Thread.currentThread().getId() + " is running");

        Thread.sleep(1000);
      }
    } catch (Exception e) {

    }
  }
}

public class Main {
  public static void main(String[] args) {
    Thread t1 = new Thread(new MyThread());
    Thread t2 = new Thread(new MyThread());
    Thread t3 = new Thread(new MyThread());

    t1.start();
    t2.start();
    t3.start();
  }
}

Output:

Thread 11 is running
Thread 12 is running
Thread 10 is running
Thread 11 is running
Thread 12 is running
Thread 10 is running
Thread 11 is running
Thread 12 is running
Thread 10 is running

Explanation:

In the above program, we created two classes MyThread and Main. We created MyThread class by implementing the Runnable interface.

The Main class contains a main() method. The main() method is the entry point for the program. Here, we created the three threads and executed them. In the run() method, we used Thread.Sleep() method to sleep thread execution for a specific time.