package demo2;
class Runner implements Runnable
{
    public void run()
    {
        for ( int i = 0; i<10; i++)
        {
            System.out.println("Hello " + i);
            try {
                Thread.sleep(100);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
}

public class App {
    public static void main(String[] args) {
        Thread t1 = new Thread(new Runner());
        Thread t2 = new Thread(new Runner());

        t1.start();
        t2.start();

    }
}