多线程_20_并发容器

import java.util.concurrent.CopyOnWriteArrayList;
关键字：CopyOnWriteArrayList
可以解决容器覆盖问题

package com.cb.thread.day04;
/*
 * 线程安全：操作并发容器
 */

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;

public class UnsafeTest implements Runnable{
	 static CopyOnWriteArrayList<String> list = new CopyOnWriteArrayList<String>();
	public static void main(String[] args) throws InterruptedException {
	
		for (int i = 0; i < 10000; i++) {
			UnsafeTest u = new UnsafeTest();
			Thread t = new Thread(u);
			t.start();
		}
		Thread.sleep(10000);
		System.out.println(list.size());
	}

	@Override
	public void run() {
		list.add(Thread.currentThread().getName());
	}
}