Question

i was thinking along the line when design some interfaces and classes whether i should be passing enum as a parameter or its literal value.

At this juncture, i am all for passing its literal value as i have read somewhere i could not remember about coupling issues passing the enum.

Does anyone have any opinion on this? 🙂

public enum Item{
CANDY("candy"), APPLE("apple");
}

1. Pass by enum

   public buy(Item item){}
   

2. Pass by literal value

   public buy(String itemValue){}
   

Cheers.

Answer 1

Enums are classes but with a set of predefined values. As such you must both declare the enum and give a variable for its instance.

Try this example :

public class ItemDemo {

public enum Item { 
    CANDY("candy"), APPLE("apple"); 
   }

CANDY c;
APPLE a;

public ItemDemo(String name, int age, double money, CANDY c, APPLE a) {
       this.c= c;
       this.a= a;
     }
   }