Hello guys,
I'm facing a problem
I need to solve a problem of multi inherence using inner classes.
So the problem is this.
I have a Father class and also a Mother class and I need that the
class Son extends from both Father and Mother so Son class can respond
to class to Father Interface and also Mother Interface. So I did the
next code. (What I usually did).
class Father{
void m(){
System.out.println("m()");
}
}
interface Mother{
void n();
}
class Son extends Father implements Mother{
public void n(){
System.out.println("n()");
}
}
So we need to implement the solution using a inner class. And we did
something like this.
class Father{
void m(){
System.out.println("m()");
}
}
class Mother{
public void n(){
System.out.println("n()");
}
class Son extends Father {
void n(){ // Metodo wraper se llama igual e invoca a otro
metodo que
se llama igual.
Mother.this.n();
}
}
public static void main(String[] args) {
Mother.Son hijo = new Mother().new Son ();
hijo.m();
hijo.n();
}
}
This approach is better according to what our teacher explain. And
this solution can be use with more than two classes.
And I did this.
class Human{
void m(){
System.out.println("m()");
}
}
class Dead{
void n(){
System.out.println("n()");
}
class InnerDeath extends Human{
void n(){
Dead.this.n();
}
}
}
public class Vampire {
void o(){
System.out.println("o()");
}
class Dracula extends Dead.InnerDeath{
Dracula(){
new Dead().super();
}
void o(){
Vampire.this.o();
}
}
public static void main(String[] args){
Vampire.Dracula dracula = new Vampire().new Dracula();
dracula.m();
dracula.n();
dracula.o();
}
}
So what I have is that, I use two inner classes one that extends from
Humand and can acces to Dead attributes and methods, And It's from
this class that extends Dracula and so that Dracula is the result and
can respond to all calls to methods of the other classes.
Is this the best approach? Do you know a better way to acomplish the
expected result?
I also have another posible solutions to accomplish this problem. I
hope that someone can comment about it. What I want is to have a
solution like a pattern to problems of what I should do if I need two
class (I already have that: inherence plus inner class) three, four,
five and so on.
Thanks in advance.
Roque Rueda.
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