import java.util.*;

class MyThread implements Runnable
{
    private Thread t;
    private String ThreadName;

    MyThread(String name)
    {
        ThreadName = name;
    }

    public void run()
    {
        System.out.println(ThreadName+" is starting..");
        try
            {
                Thread.sleep(500);
            }
        catch (InterruptedException e)
            {
                System.out.println(ThreadName+"interrupted");
            }
        System.out.println(ThreadName+" is stopping..");
    }

    public void start()
    {
        if(t == null)
            {
                t = new Thread(this, ThreadName);
                t.start();
            }
    }
}

class Test
{
    public static void main(String[] args)
    {
        MyThread m1 = new MyThread("yo dudes");
        m1.start();
        MyThread m2 = new MyThread("yo buddies again");
        m2.start();
    }
}