ThreadTest

public class  ThreadTest
{
    public static void main(String[] args) throws Exception
    {
        System.out.println("Hello World!");
        ThreadTest tt=new ThreadTest();
        tt.go();

    }
    public void go() throws Exception{
        Thread t=new Thread(new A());
        t.start();
    }

    class A implements Runnable
    {
        Thread t2=new Thread(new B());
        public void run(){
            int i=0;
            t2.start();
            while (i<10)
            {

                System.out.println(i);

                i++;

            }
        }
    }
    class B implements Runnable
    {
        int i=0;
        public void run(){
            while (i<10)
            {
                System.out.println(i);
                try {
                    Thread.sleep(500);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                i++;
            }
        }
    }
}