magorityAge.java

import java.util.HashMap; 

/**
 * HashMap example to show the mapping of a String to an Integer
 * 
 * @author benjo charlie 
 * @version 1.2
 * Changelog: Changed Map to Static Final. 
 */
public class CountryAgeOfMagority
{
    // instance variables - String to Integer type reference 
    private static final HashMap<String, Integer> ageOfMagority = new HashMap<>();
    
    /**
     * Constructor for objects of class CountryAgeOfMagority
     */
    public CountryAgeOfMagority()
    {
        //this.ageOfMagority = new HashMap<>();
        this.mapCodeToAge();
    }
    
    /**
     * Getter method for the HashMap String
     */
    public String getAgeOfMagority() 
    {
       return "" + CountryAgeOfMagority.ageOfMagority;
    }

    /**
     * Instance method to create the HashMap of country codes and ages.
     */
    private void mapCodeToAge() { 
        // Add keys and values (Country, Age)
        CountryAgeOfMagority.ageOfMagority.put("IR", 14);
        CountryAgeOfMagority.ageOfMagority.put("ID", 15);
        CountryAgeOfMagority.ageOfMagority.put("KH", 16);
        CountryAgeOfMagority.ageOfMagority.put("KP", 17);
        CountryAgeOfMagority.ageOfMagority.put("AU", 18);
        CountryAgeOfMagority.ageOfMagority.put("CA", 19);
        CountryAgeOfMagority.ageOfMagority.put("JP", 20);
        CountryAgeOfMagority.ageOfMagority.put("US", 21);
        System.out.println(ageOfMagority);
    }
    
    /**
     * Setter for the map
     */
    public void setMap(String newCountry, int newAge) {
       CountryAgeOfMagority.ageOfMagority.put(newCountry, newAge);
    }
    
    /**
     * Getter method to retreive the age information from the counrty code. 
     */
    public int getAgeFromKey(String key) {
        return CountryAgeOfMagority.ageOfMagority.get(key);
    }
    
    /**
     * Returns all instance variable values.
     */
     public String toString() {
        return "" + CountryAgeOfMagority.ageOfMagority;
     }
    
}