package com.example.ss_0203_array.test.test_0815;
import java.util.*;
public class test1 {
public static void main(String[] args) {
HashMap<String, ArrayList> hMap = new HashMap<>();
ArrayList city1 = new ArrayList<>();
city1.add("AAA1");
city1.add("AAA2");
city1.add("AAA3");
city1.add("AAA4");
ArrayList city2 = new ArrayList<>();
city2.add("BBB1");
city2.add("BBB2");
city2.add("BBB3");
city2.add("BBB4");
ArrayList city3 = new ArrayList<>();
city3.add("CCC1");
city3.add("CCC2");
city3.add("CCC3");
city3.add("CCC4");
hMap.put("A",city1);
hMap.put("B",city2);
hMap.put("C",city3);
Set<Map.Entry<String, ArrayList>> entries = hMap.entrySet();
for (Map.Entry<String, ArrayList> entry : entries) {
String key = entry.getKey();
ArrayList<String> value = entry.getValue();
StringJoiner sj = new StringJoiner(",","","");
for (String city : value) {
sj.add(city);
}
System.out.println(key + "==" + sj);
}
}
}
