interface Shape {
public double getArea();
}
class Circle implements Shape {
double radius;
public Circle(int double radius) {
this.radius = radius;
}
public double getArea() {
return (radius * radius * 3.1415);
}
}
class Square implements Shape {
double side;
public Square(int double side) {
this.side = side;
}
double getArea() {
return (side * side);
}
}
Please make an effort to understand polymorphic concepts of OOP as
they are rudimentary. Without that one will never grasp OO Patterns
(Gang of Four).
Ninus.
On 5/16/13, Tedd Sperling <tedd.sperl...@gmail.com> wrote:
> Thanks to both Bastien and Sebastian:
>
> While I understand that an interface is like an abstract Class, in that you
> don't have to flesh-out your methods, but rather where you define exactly
> how Classes who implement that interface will be required to flesh-out those
> methods. But so what? What's the point?
>
> Without giving me complicated examples, just give me one simple example that
> illustrates the advantage of using an interface over writing a new Class
> where you flesh-out whatever methods you want. After all, an interface
> requires the same thing, does it not?
>
> As such, I just don't see the advantage interfaces bring.
>
> Cheers,
>
> tedd
>
>
> _____________________
> tedd.sperl...@gmail.com
> http://sperling.com
>
>
>
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