DictionaryExercise

import java.util.*;
public class DictionaryExercise {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int id;
        String name;
        String menu = "Please choose a command:ADD, REM, CNT, PRN or END \n";
        System.out.print(menu);
        String command = scan.next();
        Dictionary<Integer, String> table = new Hashtable();

        while (!command.equals("END")){
            if (command.equals("ADD")){
                System.out.print("Enter the ID: ");
                id = scan.nextInt();
                System.out.print("Enter the name: ");
                name = scan.next();
                add(id, name, table);
            }
            else if (command.equals("REM")){
                System.out.print("Enter the ID: ");
                id = scan.nextInt();
                rem(id, table);
            }
            else if (command.equals("CNT")){
                cnt(table);
            }
            else if (command.equals("PRN")){
                prn(table);
            }
            System.out.print(menu);
            command = scan.next();
        }
        System.exit(0);
    }

    public static void add(int id, String name, Dictionary table){
        table.put(id, name);
    }
    public static void rem(int id, Dictionary table){
        table.remove(id);
    }
    public static void cnt(Dictionary table){
        System.out.println(table.size());
    }
    public static void prn(Dictionary table){
        System.out.println(table);
    }
}