HashMap遍历

Posted 2020-10-08

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

/**
 * Created by Administrator on 2017/9/27.
 */
public class HH {
    public static void main(String[] args) throws Exception{
        HashMap hashMap = new HashMap();
        hashMap.put(1,"qqq");
        hashMap.put(2,"www");
        Iterator iterator = hashMap.entrySet().iterator();
        while (iterator.hasNext()){
            Map.Entry entry = (Map.Entry) iterator.next();
            Object key = entry.getKey();
            Object value= entry.getValue();
            System.out.println(key+"--"+value);
        }
    }
}