public class testThread{
    public static void main(String args[]){
	
	ThreadGroup tg_1 = new ThreadGroup("test");
	ThreadGroup tg_2 = new ThreadGroup("test2");

	ThreadTest t1 = new ThreadTest("one",tg_1);
	t1.start();
	ThreadTest t2 = new ThreadTest("two",tg_2);
	t2.start();
	ThreadTest t3 = new ThreadTest("three",tg_1);
	t3.start();
	ThreadTest t4 = new ThreadTest("four",tg_2);
	t4.start();
	ThreadTest t5 = new ThreadTest("five",tg_1);
	ThreadTest t6 = new ThreadTest("six",tg_2);
	ThreadTest t7 = new ThreadTest("seven",tg_1);
	t5.start();
	t6.start();
	t7.start();
	tg_1.suspend();
	t2.waitSec(10);
	tg_1.resume();

	

	
    }
}