In case we want to use enum
with more information and not just as constant values, and we want to be able to compare two enums.
Consider the following example:
public enum Coin {
PENNY(1), NICKEL(5), DIME(10), QUARTER(25);
private final int value;
Coin(int value){
this.value = value;
}
public boolean isGreaterThan(Coin other){
return this.value > other.value;
}
}
Here we defined an Enum
called Coin
which represent its value. With the method isGreaterThan
we can compare two enum
s:
Coin penny = Coin.PENNY;
Coin dime = Coin.DIME;
System.out.println(penny.isGreaterThan(dime)); // prints: false
System.out.println(dime.isGreaterThan(penny)); // prints: true