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Sleep method in java

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

Syntax of sleep() method in java

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 of sleep method in java

  1. class TestSleepMethod1 extends Thread{
  2.  public void run(){
  3.   for(int i=1;i<5;i++){
  4.     try{Thread.sleep(500);}catch(InterruptedException e){System.out.println(e);}
  5.     System.out.println(i);
  6.   }
  7.  }
  8.  public static void main(String args[]){
  9.   TestSleepMethod1 t1=new TestSleepMethod1();
  10.   TestSleepMethod1 t2=new TestSleepMethod1();
  11.   t1.start();
  12.   t2.start();
  13.  }
  14. }

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.

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