Title 17 homework

import java.util.HashMap;
import java.util.Scanner;

public class grp {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("Please enter a choice:");
        System.out.println("Choice 1: Enter a group to print the album");
        System.out.println("Choice  2: Enter an album to print the group");
        int choice = scanner.nextInt();
        if (choice == 1) {
            HashMap<String, String> grups = new HashMap<String, String>();
            grups.put("Dire Straits", "Money for nothing");
            grups.put("Queen", "Queen");
            grups.put("Linkin park", "Meteora");
            grups.put("Nirvana", "Nevermind");
            grups.put("Pink Floyd", "The Wall");
            grups.put("Beatles", "Help!");
            grups.put("Led Zeppelin", "Led Zeppelin");
            grups.put("Aerosmith", "Pump");
            grups.put("Deep Purple", "Burn");
            grups.put("Nickelback", "Dark Horse");
            System.out.println("Enter a group, type \"end\" to stop: ");
            String a = "";

            while (!a.equals("end")) {
                a = scanner.next();
                String m = a.substring(0, 1).toUpperCase() + a.substring(1);
                System.out.println(grups.get(a));
            }
            System.out.println("Have a nice day!");
            }
            if (choice == 2) {
            HashMap<String, String> gr = new HashMap<String, String>();
            gr.put("Money for nothing", "Dire Straits");
            gr.put("Queen", "Queen");
            gr.put("Meteora", "Linkin park");
            gr.put("Nevermind", "Nirvana");
            gr.put("The Wall", "Pink Floyd");
            gr.put("Help!", "Beatles");
            gr.put("Led Zeppelin", "Led Zeppelin");
            gr.put("Pump", "Aerosmith");
            gr.put("Burn", "Deep Purple");
            gr.put("Dark Horse", "Nickelback");
            System.out.println("Enter an album, type \"end\" to stop: ");
            String b = "";
            while (!b.equals("end")) {
                b = scanner.next();
                String p = b.substring(0, 1).toUpperCase() + b.substring(1);
                System.out.println(gr.get(b));
            }
            System.out.println("Have a nice day!");
        }
    }
}