Factory Design pattern

package Com.Srini.DesignPatterns.Factory;

public class CurrencyFactory {
public static Currency getCurrencyByCountry(String cnty) throws Exception{
       
       if("IN".equalsIgnoreCase(cnty)){
           return new India();
       } else if("USA".equalsIgnoreCase(cnty)){
           return new USA();
       }
       throw new Exception("Invalid country...");
   }
   
   
   public static void main(String a[]){
       Currency india;
       try {
           india = CurrencyFactory.getCurrencyByCountry("USA");
           System.out.println("Indian currency: "+india.getCurrency());
           System.out.println("Indian currency symbol: "+india.getSymbol());
       } catch (Exception e) {
           e.printStackTrace();
       }
   }
}

-------------------------------------------

package Com.Srini.DesignPatterns.Factory;

public interface Currency {

public String getCurrency();

     

   public String getSymbol();

}

------------------------------------------

package Com.Srini.DesignPatterns.Factory;

public class India implements Currency{

@Override

   public String getCurrency() {

        

       return "Rupee";

   }

 

   @Override

   public String getSymbol() {

        

       return "Rs";

   }

 

   public static void main(String a[]){

        

       India in = new India();

       System.out.println(in.getSymbol());

   }

}

-------------------------------------

package Com.Srini.DesignPatterns.Factory;

public class USA implements Currency{

@Override

    public String getCurrency() {

         

        return "Dollar";

    }

 

    @Override

    public String getSymbol() {

         

        return "$";

    }

}