如何通过在Java中将字符串作为引用传递给数组来返回数组？

Question

I have array lists of cities defined by state abbreviations.

static List<String> AL = Arrays.asList("ABBEVILLE","ADAMSVILLE",.....
static List<String> AK = Arrays.asList("ADAK","AKHIOK",......

The same thing happens to the array no matter which one is called. How do I pass a string of 'AL' and access the array list AL? I currently use a case statement... But its a lot of code for all 50 and I want to trim it down a bit..

 case "AL":
   for(int index = 0; index < AL.size(); index++){.....}
 case "AK":
   for(int index = 0; index < AK.size(); index++){.....}

Id rather something like this:

for(int index = 0; index < state_abbreviation.size(){
  System.out.println(state_abbreviation[index]);

Answer 1

You could store every List<String> in a Map and use the state abbreviation as the map's key.

import java.util.*;

class Test {
    public static void main(String[] args) {
        Map<String, List<String>> states = new HashMap<String, List<String>>();
        List<String> al = Arrays.asList("ABBEVILLE", "ADAMSVILLE", "...");
        List<String> ak = Arrays.asList("ADAK", "AKHIOK", "...");
        states.put("AL", al);
        states.put("AK", ak);
        System.out.println(states.get("AL").get(1)); // ADAMSVILLE
    }
}