semaphoretest.java

来自「用NETBEANS做的一个关于Java的小小的demo.大家赐教」· Java 代码 · 共 45 行

/*
 * SemaphoreTest.java
 *
 * Created on 2007年9月14日, 上午11:43
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

package semaphore;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

/**
 *
 * @author Administrator
 */
public class SemaphoreTest {
    public static void main(String[] args){
        final Pool aPool = new Pool(2);
        Runnable worker = new Runnable() {
            public void run() {
                String resource = null;
                try {
                    //取得resource
                    resource = aPool.get();
                } catch (InterruptedException ex) {
                    ex.printStackTrace();
                }
                //用resource做工作
                System.out.println("I worked on "+resource);
                //归还resource
                aPool.put(resource);
            }
        };
        ExecutorService service = Executors.newCachedThreadPool();
        for(int i=0; i<20; i++){
            service.submit(worker);
        }
        service.shutdown();
    }
}