How to eliminate method duplicacy ?

[namohammad]

There are three classes X, Y and Z as shown below, where a method "show" in all three classes has same logic.

class X extends BaseClass1{
show(){
----
----
----
}
}

class Y extends BaseClass2{
show(){
----
----
----
}
}

class Z extends BaseClass3{
show(){
----
----
----
}
}

Now, I like to remove,

show(){
----
----
----
}

from Classes X, Y and Z. Would like to reuse the "show" method from common location(i.e either class or interface or from any source).

As the above three classes have already being extended to some BaseClass1/2/3 classes, I lost the idea of inheritance. As, Java
does not support multiple inheritance. I have no idea how to implement the same.

Any idea how to solve this issue w.r.to coding? Can any one help me on this ?

[masijade]

A static method in another class?

Edit or another class that "BaseClass1/2/3" extend, but the inheritance mecahnism is not really about "code reuse", if you find yourself using it for only that purpose you are doing something wrong.

[namohammad]

I agree, inheritance is not for reusability, but it is also for inheriting the features of parent class.

So I can assume your idea is like this, please correct me if i'm wrong.

Class Temp {

static show {
-----
-----
-----
}

}

Class BaseClass1 extends Temp{

}

Class BaseClass2 extends Temp{

}

Class BaseClass3 extends Temp{

}

And finally,

Class X extends BaseClass1 {

}

so on.....

[JosAH]

If you do it like that (it's perfectly valid) you don't even need to make the show() method static.

kind regards,

Jos

[namohammad]

Thanks alot guys.