package base;

public class ThreadGroupName implements Runnable {

	@Override
	public void run() {
		String groupAndName = Thread.currentThread().getThreadGroup().getName() + "_"
				+ Thread.currentThread().getName();
		while (true) {
			System.out.println("I am " + groupAndName);
			try {
				Thread.sleep(3000);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
	}

	public static void main(String[] args) {
		ThreadGroup tg = new ThreadGroup("PrintGroup");
		Thread t1 = new Thread(tg, new ThreadGroupName(), "t1");
		Thread t2 = new Thread(tg, new ThreadGroupName(), "t2");
		t1.start();
		t2.start();
		// 活动线程总数
		System.out.println(tg.activeCount());
		// 打印线程组的所有信息
		tg.list();
	}

}