【LinkedHashMap】

package com.yjf.esupplier.common.test;

import java.util.LinkedHashMap;
import java.util.Set;

/**
 * @author shusheng
 * @description
 * @Email [email protected]
 * @date 2018/12/18 13:40
 */
public class LinkedHashMapDemo {
    /**
     * LinkedHashMap:是Map接口的哈希表和链表实现,具有可预知的迭代顺序由哈希表保证键的唯一性
     * 由链表保证键盘的有序(存储和取出的顺序一致)
     */
    public static void main(String[] args) {

        LinkedHashMap<String, String> hm = new LinkedHashMap<String, String>();

        //创建并添加元素hm.put("100", "hello");
        hm.put("101", "world");
        hm.put("102", "java");
        hm.put("103", "javaee");
        hm.put("104", "android");

        //遍历
        Set<String> set = hm.keySet();
        for (String key : set) {
            String value = hm.get(key);
            System.out.println(key + "---" + value);
        }
    }

}

猜你喜欢

转载自www.cnblogs.com/zuixinxian/p/10341193.html
今日推荐