Hi;
It's my first post since I am a new member of this group.
As I understood from your question; you meant ABSTRACT classes versus
interfaces. OK.
Java uses interfaces for multi-inheritance; a useful capability in C++
that could turn into a night mare if something goes wrong; especially
the coffee you was drinking!!!! :-)
But the abstract classes by the way are used for polymorphism.
let see the following examples;
public class Test {
public static void main(String[] args) {
Person p;
Employee e = new Employee();
Programmer pr = new Programmer();
p = e;
System.out.println(p.getFullName());
p = pr;
System.out.println(p.getFullName());
}
}
abstract class Person {
abstract public String getFullName();
}
class Employee extends Person {
public String getFullName() {
return "Ali SOMEONE";
}
}
class Programmer extends Person {
public String getFullName() {
return "Ali SOMEOTHERONE";
}
}
would result in
Ali SOMEONE
Ali SOMEOTHERONE
but for the interface; i should think and search to find a good
example. note me if anything goes wrong there since i'm also a
beginner in java world.
have a good time!
On Dec 16, 7:51 pm, nn roh <[email protected]> wrote:
> Hi all,
>
> Thanks a lot for sharing ideas and help in this group :)
>
> I want more examples on using abstract classes and interface ... ?
>
> Thanks,
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