Java零基础学java之多线程--17线程不安全案例03

package com.li.thread_synchronized;

import java.util.ArrayList;
import java.util.List;

//线程不安全的集合
public class UnsafeList {
    public static void main(String[] args) {
        List list = new ArrayList();
        for (int i = 0; i < 100000; i++) {
            new Thread(()->
                    list.add(Thread.currentThread().getName())).start();
        }
        System.out.println(list.size());
    }
}