小编puj*_*ain的帖子

如果故障安全迭代器创建一个单独的副本并对其进行处理,那么它如何知道对原始文件所做的任何更改？

public class concurrentHashMap {
    public static void main(String[] args) throws InterruptedException {
        MapCheck obj1 = new MapCheck();
        Thread t1 = new Thread(new Runnable() {
            @Override
            public void run() {
                obj1.put();
            }
        });

        Thread t2 = new Thread(new Runnable() {
            @Override
            public void run() {
                obj1.iterte();
            }
        });

        t1.start();
        t2.start();
        t1.join();
        t2.join();
    }
}

class MapCheck {
    Map<Integer,String> map = new ConcurrentHashMap<>();
    {
        map.put(1, "pujan");
        map.put(2, "manish");
        map.put(3, "swati");
    }

    void iterte() throws InterruptedException {
        for (int key : map.keySet()) …