问个关于线程 暂停 继续的问题，希望有代码示例，谢谢。

[jyf7356759]

想要个示例代码，键盘按p就线程暂停，按r就继续执行，按s停止。
谢谢了。

[jyf7356759]

最后顶一下，睡觉了。

[jyf7356759]

比如一个简单的程序，打印1-100,按p暂停，r继续，s停止，谢谢各位了。

[jyf7356759]

晕死，没人做过么？

[zapdos]

public class test{
  test() throws Exception{
    Thread t[] = new Thread[5];
    final Thread o = new Thread();
    for(int i=0;i<t.length;i++){
      final int j = i;
      t[i] = new Thread(){
        {start();}
        public void run(){
            try{
              System.out.println("my name is "+j);
              synchronized(o){
                o.wait();
              }
              run();
            }catch(Exception e){System.out.println(e);}
            
        }
      };
    }
    for(int i=0;i<10;i++){
      synchronized(this){
        wait(500);
      }
      synchronized(o){
        o.notifyAll();
      }
    }
    System.exit(0);
  }
  public static void main(String args[]) throws Exception{
    new test();
  }
}

这样行不？
每半秒暂停一次

[jyf7356759]

求助！高手帮帮忙啊。特别是各位版主！

[jyf7356759]

谢谢楼上，不过测试了运行不了，能再帮我看看么？

[zapdos]

不行？我这边可以运行啊
C:\java>javac test.java

C:\java>java test
my name is 0
my name is 1
my name is 2
my name is 3
my name is 4
my name is 0
my name is 1
my name is 2
my name is 3
my name is 4
my name is 0
my name is 1
my name is 2
my name is 3
my name is 4
my name is 0
my name is 1
my name is 2
my name is 3
my name is 4
my name is 4
my name is 3
my name is 2
my name is 1
my name is 0
my name is 4
my name is 3
my name is 2
my name is 1
my name is 0
my name is 4
my name is 3
my name is 2
my name is 1
my name is 0
my name is 4
my name is 2
my name is 0
my name is 3
my name is 1
my name is 4
my name is 2
my name is 3
my name is 1
my name is 0
my name is 4
my name is 2
my name is 3
my name is 1
my name is 0
my name is 4
my name is 2
my name is 1
my name is 0
my name is 3

[jyf7356759]

那很奇怪啊，我运行就什么都没有output.

[jyf7356759]

那我能再请问下thread是怎么让它暂停和继续的么？

[zapdos]

就是先做一把锁，然后用wait();和notify();来控制就行了

[zapdos]

就是先做一把锁，然后用wait();和notify();来控制就行了

[jyf7356759]

哦，谢谢了，能给个小例子讲解下么？最简单的。如果我还是运行不了那就结了这个我重发了

[jyf7356759]

能帮我看看这段代码为什么不能控制暂停和继续么？

public class testThread {
    
    public static void main(String[] args) throws InterruptedException {
        
        A a = new A();
        a.start();
        synchronized(a){
            a.wait(10000);
          }
          synchronized(a){
            a.notifyAll();
          }
    }
}
class A extends Thread{
    
    public void run(){
        
                try {
                	for(int i=0; i<10; i++)
                	{
                	System.out.println(" do ......" + i);
                	}
                } catch (Exception dx) {
                    dx.printStackTrace();
                }
            }
        
}

[jyf7356759]

Java_2000老竹竹和其他版主帮帮我啊

[老紫竹]

FROM：http://www.java2000.net/viewthread.jsp?tid=1735

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Test {
  public static void main(String[] args) throws IOException, InterruptedException {
    TestThread t = new TestThread();
    t.start();
    BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
    String line = null;
    while (true) {
      line = reader.readLine();
      System.out.println("line=" + line);
      if ("p".equalsIgnoreCase(line)) {
        t.pause = true;
      } else {
        t.pause = false;
        synchronized (t) {
          t.notifyAll();
        }
      }
    }
  }
}

class TestThread extends Thread {
  boolean pause;

  public void run() {
    while (true) {
      try {
        if (pause) {
          synchronized (this) {
            wait();
          }
        }
        System.out.println("I am working ...");
        Thread.sleep(1000);
      } catch (InterruptedException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
      }
    }
  }
}

[jyf7356759]

谢谢老竹竹先，我去运行下看看。
不过怎么程序有错，运行不了呢？第一行import报错？这种是什么错误啊？

[jyf7356759]

暂停后继续的时候会有个异常...什么情况啊。

[老紫竹]

如果异常在catch范围内，程序能正常切换，那么就是可控异常，不用管它！

[jyf7356759]

好的，先结了这个。

[zapdos]

是么？那真是很奇怪