package demo1;
class Runner extends Thread
{
    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)
    {
        Runner runner1 = new Runner();
        runner1.start();
        Runner runner2 = new Runner();
        runner2.start();
    }
}