RE: Vector question

Your coding is fine. Using the "this" keyword is redundant unless you have a
local variable with the same name as a global variable and you want to refer
to the global variable. It's not broken, just unneccessary. "this" always
refers to the current object.

Joe Teff

-----Original Message-----
From: owner-java400-l@midrange.com
[mailto:owner-java400-l@midrange.com]On Behalf Of Stone, Brad V (TC)
Sent: Monday, March 05, 2001 3:54 PM
To: 'JAVA400-L@midrange.com'
Subject: RE: Vector question


Ok, here's what I did...  I made a method in MyClassList that looks like
this:

public MyClass getMyClass(int index)
{
  return (MyClass) this.MyClassList.get(index);
}

This worked, I just want to make sure this is ok to do it this way (mainly
the casting part).

Brad


> -----Original Message-----
> From: Fred Kulack [mailto:kulack@us.ibm.com]
> 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
>
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