public class JoinThread
{
    public static void main(String[] args)
    {
        ThreadTest t=new ThreadTest();
        Thread pp=new Thread(t);
        pp.start();
        int i=0;
        while(true)
        {
            if(i==100)
            {
                try
                {
                    pp.join();
                }
                catch(Exception e)
                {
                    System.out.println(e.getMessage());
                }
            }
            System.out.println("main Thread " + i++);
        }
    }
}
class ThreadTest implements Runnable
{
    public void run()
    {
        String str=new String();
        int i=0;
        while(true)
        {
            System.out.println(Thread.currentThread().getName()+ " " + i++);
        }
    }
}