import java.util.*;

public class Ayush{
    private final static String NAME = "Ayush Choudhary";
    private final static String USERNAME = "ayushhurdey";
    private final static String LOCATION = "Bengaluru, Karnataka, India";
    private final static String LINKEDIN = "https://www.linkedin.com/in/ayush-choudhary-5a0b1b193/";
    private static Map<String, String> map;
    public static Ayush singleton;
    
    private Ayush(){}
    
    public static Ayush getInstance(){
         if (singleton == null){ 
            singleton = new Ayush();
        }
        
        return singleton;
    }
    
    public static Map<String, String> getUserData() {
          map = new HashMap<>(){
             {
                 put("name", NAME);
                 put("username", USERNAME);
                 put("location", LOCATION);
                 put("linkedin", LINKEDIN);
             }
         };
         return map;
    }
    
    public static void main(String args[]){
        Ayush.getInstance()
            .getUserData()
            .forEach((key, value) -> System.out.println(key+ " : " + value));
    }