类ThreadGroup

Java中使用ThreadGroup来表示线程组，它可以对一批线程进行分类管理，Java允许程序直接对线程组进行控制。

默认的情况下，所有的线程都属于主线程组。

public final ThreadGroup getThreadGroup()

我们也可以给线程设置分组

Thread(ThreadGroup group,Runnable target,String name)

public class IntegerDemo {

	public static void main(String[] args) {

		MyRunnable my = new MyRunnable();

		Thread t1 = new Thread(my, "hello");

		Thread t2 = new Thread(my, "world");

		ThreadGroup tg1 = t1.getThreadGroup();

		ThreadGroup tg2 = t2.getThreadGroup();

		System.out.println(tg1.getName());// main

		System.out.println(tg2.getName());// main

		System.out.println(Thread.currentThread().getThreadGroup().getName());// main

	}

}

class MyRunnable implements Runnable {

	@Override

	public void run() {

		// TODO Auto-generated method stub

		for (int i = 0; i < 100; i++) {

			System.out.println(Thread.currentThread().getName() + ":" + i);

		}

	}

}

void setDaemon(boolean daemon);// 更改此线程组的后台程序状态。

public class IntegerDemo {

	public static void main(String[] args) {

		method();

	}

	private static void method() {

		ThreadGroup tg = new ThreadGroup("新的线程组");

		MyRunnable my = new MyRunnable();

		Thread t1 = new Thread(tg, my, "hello");

		Thread t2 = new Thread(tg, my, "world");

		tg.setDaemon(true);// 更改此线程组的后台程序状态。

		ThreadGroup tg1 = t1.getThreadGroup();

		ThreadGroup tg2 = t2.getThreadGroup();

		System.out.println(tg1.getName());// 新的线程组

		System.out.println(tg2.getName());// 新的线程组

		System.out.println(Thread.currentThread().getThreadGroup().getName());// main

	}

}

class MyRunnable implements Runnable {

	@Override

	public void run() {

		// TODO Auto-generated method stub

		for (int i = 0; i < 100; i++) {

			System.out.println(Thread.currentThread().getName() + ":" + i);

		}

	}

}

巴特西

类ThreadGroup

最新文章

热门文章