templated classes

[mackey333]

Is there a way to template classes in java (make them work with more than one data type). I've tried using Object and Number for the variable inside the class. This works limitedly with data going into the class, but requires an explicit cast after returning variables. I am trying to create a Vector class that will work with all data types.

-Greg :-Q

 

[idarke]

Doesn't Vector already do that? You put an Object in, you get an Object out.

I can understand your wanting to avoid casting things on the way out. I don't think it's possible, though.

 

[mackey333]

I haven't used java's built in Vector class. I am trying to create my own as a learning experince...I have all the code to work but so far only in seperate classes: IntVector, StringVector, etc..

-Greg :-Q

 

[globos]

You may use Gj(Generic Java) which is an extension to the java language in order to make it support genericity.

Here is homepage of the Gj project :

http://www.cis.unisa.edu.au/~pizza/gj/

--
Globos

 

[JavaDude32]

I'd just write it using an Object receive and return type since if you're using the Vector you will know the data type and hence no real problem casting. If you wish to create a related Vector, use interfaces for the classes and write the methods to take interface types. Like a RNumber interface for Float and Double. Things like that. Hope that helps, JavaDude32.