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());
}
}