Implements Runnable

public class Main{
    public static void main(String args[]){
        new NewThread();
        try{
            for(int i=5;i>0;i--){
                System.out.println("Main Thread " + i);
                Thread.sleep(1000);
            }
        }catch(InterruptedException e){
            System.out.println("Main thread Interrupted");
        }
        System.out.println("Main Tread Exiting");
    }
}
public class NewThread implements Runnable{
    Thread t;
    NewThread(){
        t = new Thread(this, "Demo thread");
        System.out.println("Child Thread " + t);
        t.start();
    }
    public void run(){
        try{
            for(int i=5;i>0;i--){
                System.out.println("Child Thread " + i);
                Thread.sleep(500);
            }
        }catch(InterruptedException e){
            System.out.println("Child Interrupted");
        }
        System.out.println("Child Thread Exiting");
    }
}