Map的遍历示例

package map;

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

/**
 * @auto dh
 * @create 2020-04-30-16:57
 */
public class HashMap001 {
    public static void main(String[] args) {
        Map<String,Integer> map=new HashMap<>();
        map.put("zhangsan",20);
        map.put("lisi",23);
        map.put("wangwu",32);
        Set<Map.Entry<String,Integer>> entry=map.entrySet();
        Iterator<Map.Entry<String,Integer>> iterator=entry.iterator();
        while(iterator.hasNext()){
            Map.Entry<String,Integer> map1=iterator.next();
            System.out.println(map1.getKey()+":"+map1.getValue());
        }

    }
}