JAVA多线程——JUC包
JUC(java,util,concurrent)并发包,并发包中包含了许多并发编程中需要用到的类
package com.peng.cny;
import java.util.concurrent.CopyOnWriteArrayList;
//测试JUC包下的安全类型的集合
public class TestJUC {
public static void main(String[] args) {
//CopyOnWriteArrayList这个类的线程是安全的
CopyOnWriteArrayList<String> list = new CopyOnWriteArrayList<String>();
for (int i = 0; i < 10000; i++) {
new Thread(()->{
list.add(Thread.currentThread().getName());
}).start();
}
try {
Thread.sleep(3000);
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println(list.size());
}
}