[639] in java-interest
Re: Categories in Java?
daemon@ATHENA.MIT.EDU (Mike Fleming)
Mon Jul 10 17:03:11 1995
From: Mike Fleming <mikef@xnet.com>
To: mlorton@eshop.com (Michael Lorton)
Date: Mon, 10 Jul 1995 15:44:34 -0500 (CDT)
Cc: mikef@cyclone.xnet.com, phil@bolthole.com, java-interest@java.sun.com
In-Reply-To: <199507101920.MAA03917@eshop.com> from "Michael Lorton" at Jul 10, 95 01:24:13 pm
Hmmm....Well, I must admit that I haven't taken an extremely close look
at Java security. The only thing that categories would allow you to do
is to access "private" instance variables for a class. Does this really
create a security hole?
Otherwise, I don't see how a security hole would be created. When
you load a category, the category only affects your process's concept
of the class heirarchy. Furthermore, I would have to assume that Java
security goes beyond private instance variables...but as I admitted,
I don't know...
Hmm. Well, if it does cause a security hole, the issue is settled.
If it doesnt, I think that categories are an important aspect
of Objective-C and might be even more useful in Java with the concept
of "packages".
Mike
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