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

import javax.swing.*;

public class test {


    public static void main( String args []){
       HashMap<String, Integer> phonebook = new HashMap<>();


       int counter = 0;
       while(true){
            Scanner text = new Scanner(System.in);
           System.out.print("Enter  you phonebook");
            String value1 = text.nextLine();
            if(value1.equals("Display")){
                System.out.print(phonebook);
            }else{
                phonebook.put(value1, counter++);
            }
            }
       }
    }