Good Application Design Using OOP Concepts

> Hi,

>

> I just want to know, how did you (as experienced Java

> developers) learn the way to design your application

> in a professional way.

Read lots of books, but the most of my knowledge comes from experience. I've seen the design of many different types of systems, and I have implemented many many bugs and bad designs, so now I know how things shouldn't be done.

> How do you design your application (before start

> writing a single line of code) to give it the

> features like scalability?

I just ask some questions about what the most important features are, and what the customer have had before and why it wasn't good. I start coding as soon as I know what to build (that means that I don't model in Rose or any other OO tool). I do all modeling in code, and I refactor often. I do also think in general design concepts.

> How do you manage

> conceptual application layers?

Once again, experience solves that problem.

> How do you find the

> best (or one of the best) designs for your

> application which results in a professional, scalable

> application.

experience and common knowledge.

> OOP concepts help a lot, but need

> someone who exactly knows how to use them.

>

> There's plenty of poor designed applications which

> need lots of code rewriting to add a small new

> feature to them.

They are usually designed by people who don't care about design or lacks experience.

> I hope I could tell you what I

> mean, how do you prevent this?

Work sweat and tears.

Kaj

kajbja at 2007-7-12 17:39:00 >