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getId() method of thread

getId() method returns thread identifier. It is a unique positive number. It is generated at the time of thread creation.

Example

 public class  ExampID1  extends  Thread {
    
    public void  run(){
        System.out.println( "Thread id is "+Thread.currentThread().getId());
    }

    public static void  main(String[] args) {
       
      ExampID1 t1 = new ExampID1();
      
      t1.start();
   }
}

Output

Thread id is 11

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