Abstract Method in enum

[Sandeep Chhabra]

Hi,

When we declare some abstract method in a class, we need to make the class abstract. but when we declare an abstract method in an enum we need not do it.

  
enum Color
{
Red{
String value()
{
return "Red Color is "+col;
}},
        
        Green{
String value()
{
return "Green Color is "+col;
}}, 
 
        Blue{
String value()
{
return "Blue Color is "+col;
}};
abstract String value();
String col;
Color()
{
col=this.toString();
}

}
public class test32
{
Color c;
public static void main(String...as)
{
for(Color co:Color.values())
{
System.out.println(co.value());
}
}
}

Why is it so?

Sandy

[Joseph Clark]

the Enum type is implicitly abstract, like a Java interface.

The signature is:

public abstract class Enum<E extends Enum<E>> extends Object implements Comparable<E>, Serializable