java线程池

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 利用Executors创建所需要的缓存类型

package cn.zto.threadpool;

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

//线程池
public class TestThreadPool {

	public static void main(String[] args) {
		//创建有3个线程的线程池
		//ExecutorService service = Executors.newFixedThreadPool(3);
		
		//创建一个线程缓存池   根据需要的线程数 而 创建线程
		ExecutorService service = Executors.newCachedThreadPool();
		
		//创建一个只有一个线程的线程池，如果线程死亡 则会重新搞个线程
		//ExecutorService service = Executors.newSingleThreadExecutor();
		
		for (int i = 1; i <= 10; i++) {
			final int count = i;
			service.execute(new Runnable() {
				
				@Override
				public void run() {
					
					try {
						Thread.sleep(30);
					} catch (InterruptedException e) {
						e.printStackTrace();
					}
					for (int i = 1; i <= 5; i++) {
						System.out.println("第"+i+"次循环,在"+count+"任务中");
					}
				}
			});
			
		}
		
		service.shutdown();
	}

}