JUC-CopyOnWriteArrayList(测试JUC安全类型的集合)


JUC是java的并发包下的内容,里面有一个方法数组:CopyOnWriteArrayList,是线程安全的List
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
    CopyOnWriteArrayListlist=new CopyOnWriteArrayList();//集合都加泛型用来约束 
        for (int i=0;i<10000 ;i++ ){
            new Thread(()->{
                list.add(Thread.currentThread.getName());
            }).start();
        } 
        try {
              Thread .sleep(1000);
        } catch(InterruptedException e) {
            System.out.println("no");
        } 
      System.out.println(list.size());//打印数组长度
        
        
    }
}