若问关于线程

Question

在JFrame调用一个自己重写的线程MyThread类，里面run函数中为sleep（1000）后打印数字。现在要想在JFrame增加一个暂停按钮，点了之后打印数字暂停，再点打印继续。请问怎么实现啊？suspend和resume已经废弃了吧？也不知道该怎么用wait和notify

Answer 1

同步方法中wait。点击的时候notify，可以指定线程唤醒执行，也可以notifyAll全部唤醒。

Answer 2

增加一个boolean boo = false
每次点击的时候根据boo的值判断是暂停还是唤醒,最后boo=!boo;

Answer 3

不知道可以不/*
 * file: Pause.java
 * class: Pause
 *
 * description: 
 *
 * @author:  leisore
 * @version: V1.0.0
 */
package cn.leisore.daily._2010_06_24;import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;public class PauseDemo extends Thread {    private int counter = 0;
    private Object obj = new Object();
    private boolean pause = false;
    private volatile boolean stop = false;    public PauseDemo() {
        super();
    }    public void run() {
        while (!stop) {
            synchronized (obj) {
                System.out.println("run:" + counter++);
            }            try {
                sleep(1000);
            } catch (InterruptedException e) {
                // e.printStackTrace();
            }            synchronized (obj) {
                if (pause) {
                    try {
                        System.out.println("pause");
                        obj.wait();
                    } catch (InterruptedException e) {
                        // e.printStackTrace();
                    }                    pause = false;
                }
            }
        }
    }    public void pause() {
        synchronized (obj) {
            if (!pause) {
                pause = true;
                interrupt();
                obj.notifyAll();
            }
        }
    }    public void next() {
        synchronized (obj) {
            if (pause) {
                pause = false;
                obj.notifyAll();
            }
        }
    }    public void shutdown() {
        synchronized (obj) {
            if (!stop) {
                stop = true;
                interrupt();
                obj.notifyAll();
            }
        }
    }    public static void main(String[] args) {
        final PauseDemo pd = new PauseDemo();
        pd.start();        new Thread() {
            public void run() {
                BufferedReader br = new BufferedReader(new InputStreamReader(
                        System.in));
                String line = null;
                boolean stop = false;
                while (!stop) {
                    try {
                        line = br.readLine();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                    if ("p".equalsIgnoreCase(line)) {
                        pd.pause();
                    } else if ("n".equalsIgnoreCase(line)) {
                        pd.next();
                    } else if ("s".equalsIgnoreCase(line)) {
                        pd.shutdown();
                        stop = true;
                    }
                }
            }
        }.start();
    }
}

Answer 4

谢谢了，分都给你吧 但是你设置如果在sleep的时候调用interrupt();会抛interruptedException的异常，我反正就单线程所以就注掉了，如果有改进意见别忘告诉我~~