java中HashMap的遍历方式

贴代码:

import java.util.HashMap;

public class Test{

    public static void main(String[]args){

        HashMap map = new HashMap();

        map.put(1, "machi");

        map.put(2, "xiaoming");

        map.put(3, "xiaowang");

        map.put(4, "xiaoliu");

        for(int x: map.keySet()){        //递归遍历HashMap

            System.out.println("key = " + x + ", value = " + map.get(x));
    
        }
    
    }
}