實例如下所示：
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package test;import java.util.arraylist;import java.util.collections;import java.util.comparator;import java.util.hashmap;import java.util.list;import java.util.map;public class java_listmapsort { public static void main(string[] args) { // todo auto-generated method stub list<map<string, object>> list = new arraylist<map<string, object>>(); map<string, object> map1 = new hashmap<string, object>(); map1.put("name", "p"); map1.put("cj", "5"); map<string, object> map2 = new hashmap<string, object>(); map2.put("name", "h"); map2.put("cj", "12"); map<string, object> map3 = new hashmap<string, object>(); map3.put("name", "f"); map3.put("cj", "31"); list.add(map1); list.add(map3); list.add(map2); //排序前 for (map<string, object> map : list) { system.out.println(map.get("cj")); } collections.sort(list, new comparator<map<string, object>>() { public int compare(map<string, object> o1, map<string, object> o2) { integer name1 = integer.valueof(o1.get("cj").tostring()) ;//name1是從你list里面拿出來的一個 integer name2 = integer.valueof(o2.get("cj").tostring()) ; //name1是從你list里面拿出來的第二個name return name1.compareto(name2); } }); //排序后 system.out.println("-------------------"); for (map<string, object> map : list) { system.out.println(map.get("cj")); } }} |
以上這篇java中對list map根據map某個key值進行排序的方法就是小編分享給大家的全部內容了，希望能給大家一個參考，也希望大家多多支持服務器之家。
原文鏈接：https://blog.csdn.net/wo88798/article/details/78342640
