Question

In this program, you will write a simple program that holds all of the states and their corresponding capitals in a Map.

PROGRAM MUST BE DONE IN JAVA

Your program must have the following features:

·This program will be a Java Console Application called StateCapitals.

·Create a Map to hold the names of all the states and their corresponding capital names.
(State name is the key, capital name is the value.)

·Load the HashMap with each state/capital pair.
(This should be hard-coded.)

·Print all of the state names to the screen.
(Hint: Get the keys from the map and then print each state name one by one.)

·Print all of the capital names to the screen.
(Hint: Get the values from the map and then print each capital name to the screen one by one.)

·Print each state along with its capital to the screen.
(Hint: Use the key set to get each value from the map one by one, printing both the key and value as you go.)

Sample output (order may vary):

STATES:

=======

Alabama

Alaska

Arizona

Arkansas

…

…

CAPITALS:

=========

Montgomery

Juneau

Phoenix

Little Rock

…

…

STATE/CAPITAL PAIRS:

====================

Alabama - Montgomery

Alaska - Juneau

Arizona - Phoenix

Arkansas - Little Rock

Answer 1

import java.io.*;
import java.util.HashMap; 
import java.util.Map;

public class StateCapitals {
        public static void main (String[] args) {
                HashMap<String, String> map 
            = new HashMap<>(); 
            map.put("Alabama","Montgomery");
            map.put("Alaska","Juneau");
            map.put("Arizona","Phoenix");
            map.put("Arkansas","Little Rock");
               
            //print map with each state capital 
            System.out.println("STATE/CAPITAL PAIRS:");
            System.out.println("====================");
            for (Map.Entry<String, String> e : map.entrySet()) 
                  System.out.println(e.getKey() + "---" + e.getValue());
            System.out.println("...");
            
   
            //Print all of the state names to the screen.
            System.out.println("STATES:");
            System.out.println("=======");
              for (String i : map.keySet()) {
                   System.out.println(i);
              }
            System.out.println("...");
            
            //print all the capitals
            System.out.println("CAPITALS:");
            System.out.println("=========");
            for (String i : map.values()) {
                   System.out.println(i);
             }
            
        }
        
        
}

output: