orange_yoo的博客

package com.cy.test21; import java.util.ArrayList; import java.util.HashMap; import java.util.Set; /** * map结合嵌套list集合 */ public class MapIncludList { public static void main(String[] args) { HashMap<String, ArrayList<String>> map = .

转自 https://www.cnblogs.com/blest-future/p/4628871.html