工学1号馆

home

java多线程系列2-线程控制

By Wu Yudong on June 17, 2015

原创文章,转载请注明: 转载自工学1号馆

前面的文章已经介绍了有关线程的调度,接下来介绍如何使用方法对线程进行控制

1、线程休眠

public static void sleep(long millis)

/*
 * 线程休眠
 *		public static void sleep(long millis)
 */
public class ThreadSleepDemo {
	public static void main(String[] args) {
		ThreadSleep ts1 = new ThreadSleep();
		ThreadSleep ts2 = new ThreadSleep();
		ThreadSleep ts3 = new ThreadSleep();

		ts1.setName("zhangsan");
		ts2.setName("lisi");
		ts3.setName("wangwu");

		ts1.start();
		ts2.start();
		ts3.start();
	}
}

public class ThreadSleep extends Thread {
	@Override
	public void run() {
		for (int x = 0; x < 100; x++) {
			System.out.println(getName() + ":" + x + ",日期:" + new Date());
			// 睡眠
			try {
				Thread.sleep(1000);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
	}
}

2、线程加入

public final void join()

public class ThreadJoin extends Thread {
	@Override
	public void run() {
		for (int x = 0; x < 100; x++) {
			System.out.println(getName() + ":" + x);
		}
	}
}
/*
 * public final void join():等待该线程终止。 
 */
public class ThreadJoinDemo {
	public static void main(String[] args) {
		ThreadJoin tj1 = new ThreadJoin();
		ThreadJoin tj2 = new ThreadJoin();
		ThreadJoin tj3 = new ThreadJoin();

		tj1.setName("zhangsan");
		tj2.setName("lisi");
		tj3.setName("wangwu");

		tj1.start();
		try {
			tj1.join();
		} catch (InterruptedException e) {
			e.printStackTrace();
		}
		
		tj2.start();
		tj3.start();
	}
}

3、线程礼让

public static void yield()

public class ThreadYield extends Thread {
	@Override
	public void run() {
		for (int x = 0; x < 100; x++) {
			System.out.println(getName() + ":" + x);
			Thread.yield();
		}
	}
}
/*
 * public static void yield():暂停当前正在执行的线程对象,并执行其他线程。 
 * 让多个线程的执行更和谐,但是不能靠它保证一个线程一次。
 */
public class ThreadYieldDemo {
	public static void main(String[] args) {
		ThreadYield ty1 = new ThreadYield();
		ThreadYield ty2 = new ThreadYield();

		ty1.setName("zhangsan");
		ty2.setName("lisi");

		ty1.start();
		ty2.start();
	}
}

4、后台线程

public final void setDaemon(boolean on)

public class ThreadDaemon extends Thread {
	@Override
	public void run() {
		for (int x = 0; x < 100; x++) {
			System.out.println(getName() + ":" + x);
		}
	}
}

/*
 * public final void setDaemon(boolean on):将该线程标记为守护线程或用户线程。
 * 当正在运行的线程都是守护线程时,Java 虚拟机退出。 该方法必须在启动线程前调用。 
 * 
 */
public class ThreadDaemonDemo {
	public static void main(String[] args) {
		ThreadDaemon td1 = new ThreadDaemon();
		ThreadDaemon td2 = new ThreadDaemon();

		td1.setName("zhangsan");
		td2.setName("lisi");

		// 设置收获线程
		td1.setDaemon(true);
		td2.setDaemon(true);

		td1.start();
		td2.start();
		Thread.currentThread().setName("wuyudong");
		for (int x = 0; x < 5; x++) {
			System.out.println(Thread.currentThread().getName() + ":" + x);
		}
	}
}

5、中断线程

public final void stop()

public void interrupt()

import java.util.Date;

public class ThreadStop extends Thread {
	@Override
	public void run() {
		System.out.println("开始执行:" + new Date());

		// 我要休息10秒钟
		try {
			Thread.sleep(10000);
		} catch (InterruptedException e) {
			// e.printStackTrace();
			System.out.println("线程被终止了");
		}

		System.out.println("结束执行:" + new Date());
	}
}
/*
 * public final void stop():让线程停止,过时了,但是还可以使用。
 * public void interrupt():中断线程。 把线程的状态终止,并抛出一个InterruptedException。
 */
public class ThreadStopDemo {
	public static void main(String[] args) {
		ThreadStop ts = new ThreadStop();
		ts.start();

		// 超过三秒不醒过来,就干掉你
		try {
			Thread.sleep(3000);
			// ts.stop();
			ts.interrupt();
		} catch (InterruptedException e) {
			e.printStackTrace();
		}
	}
}

如果文章对您有帮助,欢迎点击下方按钮打赏作者

Comments

No comments yet.
To verify that you are human, please fill in "七"(required)