Java实现控制线程超时的简单方法

 原理：增加一个线程类用于监控目标类即可，代码如下：

package aa;

import java.util.Vector;

public class SomeoneThread extends Thread implements ISomeoneThread{
 /**
  * @param args
  */
 public static void main(String[] args) {
  SomeoneThread thread = new SomeoneThread();
  thread.start();
  
  TimeoutManager manager = new TimeoutManager();
  manager.vector.add(thread);
  manager.start();

 }
 
 @Override
 public void run() {
  super.run();
  startTime = System.currentTimeMillis();
  int i = 0;
  while(isRunning()){
   System.out.println("vlaue:" + i++ );
   
   try {
    Thread.currentThread().sleep(1000);
   } catch (InterruptedException e) {
    e.printStackTrace();
   }
  }
  
 }
 // 运行标识
 private boolean running = true;

 // 目标类的启动时间
 private long startTime;
 
 public boolean timeout() {
  long currentTime = System.currentTimeMillis();
  // 表示当运行超时，例如10s
  if ( (currentTime - startTime) < 10000 ){
   return false;
  }
  return true;
 }

 public synchronized boolean isRunning() {
  return running;
 }

 public synchronized void setRunning(boolean running) {
  this.running = running;
 }
 
}

class TimeoutManager extends Thread {

 public Vector vector = new Vector();
 
 public boolean running = true;
 
 @Override
 public void run() {
  super.run();
  while(running){
   for ( int i = 0; i< vector.size();i++){
    Object obj = vector.get(i);
    if ( obj instanceof ISomeoneThread){
     if ( ((ISomeoneThread)obj).timeout()){
      ((SomeoneThread)obj).setRunning(false);
      System.out.println("timeout");
      running = false;
     }
    }
   }
  }
 }
 
}

interface ISomeoneThread {
 public boolean timeout();
}