RE: Vector question

["Joe Teff" <JoeTeff@xxxxxxxxxxxxx>]

I agree with your points. I was trying to keep it as close to the original
code as possible in order to emphasize the casting issue. Another standards
issue is that isXXX is normally used as a method that returns a boolean.

Joe

-----Original Message-----
From: owner-java400-l@midrange.com
[mailto:owner-java400-l@midrange.com]On Behalf Of Fred Kulack
Sent: Saturday, March 03, 2001 6:24 PM
To: JAVA400-L@midrange.com
Subject: RE: Vector question



The only thing I'd add is that
this line of code really is bad.

>> if ((MyClass)(list.paintOptions.get(x)).isBlue)
I hope this was just a simple example.

You really want to encapsulate the fact that your
'MyClassList' has any particular implementation in
it.

In your small example, any users of MyClassList
know and use the Vector it contains. (This is
sort of pointless, they might as well just
use the vector directly. 8-)).

The MyClassList needs to provide a "public MyClass get(something)",
that way the get() method handles all the details and
you can change it to use a different underlying
implementation or contained objects at any time.



"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

+---
| This is the JAVA/400 Mailing List!
| To submit a new message, send your mail to JAVA400-L@midrange.com.
| To subscribe to this list send email to JAVA400-L-SUB@midrange.com.
| To unsubscribe from this list send email to JAVA400-L-UNSUB@midrange.com.
| Questions should be directed to the list owner: joe@zappie.net
+---

+---
| This is the JAVA/400 Mailing List!
| To submit a new message, send your mail to JAVA400-L@midrange.com.
| To subscribe to this list send email to JAVA400-L-SUB@midrange.com.
| To unsubscribe from this list send email to JAVA400-L-UNSUB@midrange.com.
| Questions should be directed to the list owner: joe@zappie.net
+---