Sleep method in java

The sleep() method of Thread class is used to sleep a thread for the specified amount of time.

Syntax

The Thread class provides two methods for sleeping a thread:

public static void sleep(long miliseconds)throws InterruptedException
public static void sleep(long miliseconds, int nanos)throws InterruptedException

Example

Example of sleep method in java

snippet

class TestSleepMethod1 extends Thread{
 public void run(){
  for(int i=1;i<5;i++){
    try{Thread.sleep(500);}catch(InterruptedException e){System.out.println(e);}
    System.out.println(i);
  }
 }
 public static void main(String args[]){
  TestSleepMethod1 t1=new TestSleepMethod1();
  TestSleepMethod1 t2=new TestSleepMethod1();
 
  t1.start();
  t2.start();
 }
}

Output

1 1 2 2 3 3 4 4

As you know well that at a time only one thread is executed. If you sleep a thread for the specified time,the thread shedular picks up another thread and so on.

Related Tutorial

1 Multithreading in Java

2 Life cycle of a Thread (Thread States)

3 How to create thread

4 Thread Scheduler in Java

5 Sleep method in java

6 Can we start a thread twice

7 What if we call run() method directly instead start() method?

8 The join() method

9 Naming Thread and Current Thread

10 Priority of a Thread (Thread Priority):

11 Java Thread Pool