Re: Apache JDBC utils

From:
=?ISO-8859-1?Q?Arne_Vajh=F8j?= <arne@vajhoej.dk>
Newsgroups:
comp.lang.java.programmer
Date:
Thu, 03 May 2012 14:03:04 -0400
Message-ID:
<4fa2c85a$0$293$14726298@news.sunsite.dk>
On 5/2/2012 6:27 PM, Jan Burse wrote:

Jan Burse schrieb:

But advantage of JSP is that it is readily
available. And its actually very old, already
around 1990. But you will not hear some praise
of it from me.


A more profane reason not to use JSP is the
fact that it polutes the perm spaces of Java.
One JSP is compiled into a class, and you can
even recompile without stopping/starting a
web context. This is a realy nice feature.

But Java perm spaces can be restricted, and so
it can be prohibitive to use JSP when you
have a great number of templates. This is
not so much a problem when you only need
a couple of templates to generate some DB
beans and other associate Java classes.

But it can be a problem in many other circum-
stances. So one can then lookup one of the
many template languages and processors on
the market, or one can roll an own template
language and processor (*).


Java classes generated from JSP's are no
different than any other classes.

If you generate a class per something, then you
use perm gen space.

And the the classes are unloaded (via GC of
classloader) then the space is released again.

Arne

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