RE: OO and Procedural Work Units (was switch string)

["Alistair Rooney" <alistairr@xxxxxxxxxx>]

Fred,

I heard somewhere that IBM rely heavily on CRC cards during their OOD. As
someone who is fairly new to OOD and UML, can you give me a "real" world
feel of the relevance of use cases and the like.

TIA,

Alistair
-----Original Message-----
From: owner-java400-l@midrange.com
[mailto:owner-java400-l@midrange.com]On Behalf Of Fred Kulack
Sent: Wednesday, March 07, 2001 11:22 PM
To: JAVA400-L@midrange.com
Subject: RE: OO and Procedural Work Units (was switch string)



On 03/07/2001 at 03:14:27 PM, owner-java400-l@midrange.com wrote:
1. You create a bunch of classes that perform functions you need done.

2. After a while, you notice that you are writing similar methods and code
fragments in several of these classes.

3. So you abstract this, using one of three (or probably more) methods:
   a. Make those classes be subclasses of a generic class that does the
common code;
   b. Make classes implement an interface, so that code that uses them can
be generic;
   c. Provide convenience or singleton classes to do standard things.

4. Repeat from step 1.

I agree completely (enough to excerpt and post it again! 8-)



"The stuff we call "software" is not like anything that human society
  is used to thinking about. Software is something like a machine, and
  something like mathematics, and something like language, and
  something like thought, and art, and information...
  but software is not in fact any of those other things."
Bruce Sterling - The Hacker Crackdown

Fred A. Kulack  -  AS/400e  Java and Java DB2 access, Jdbc, JTA, etc...
IBM in Rochester, MN  (Phone: 507.253.5982   T/L 553-5982)
mailto:kulack@us.ibm.com   Personal: mailto:kulack@bresnanlink.net
AOL Instant Messenger: Home:FKulack  Work:FKulackWrk

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