Re: Java web start and jars...

From:

Thomas Hawtin <usenet@tackline.plus.com>

Newsgroups:

comp.lang.java.programmer

Date:

Thu, 21 Sep 2006 22:46:45 +0100

Message-ID:

<45130833$0$3582$ed2e19e4@ptn-nntp-reader04.plus.net>

tiewknvc9 wrote:

With java web start, if I were to pack everything into a single jar and
have someone download it. Then update a single class file within that
jar, is the whole jar downloaded onto their computer for the next
update? Or is the single class file downloaded to their machine for
the update?

If you just dump it on a web server, then yes. However, there is a
jardiff format for patches. IIRC, there's a provided servlet that
handles the serving up the right version.

can java webstart support multiple jar files as a single application?
meaning, if I were to supply 3 jar files (one with the graphics, one
with library jars/zips, and one with my classes), how would I go about
loading the resources from the seperated out jars? Or would it seem
seemless as long as the classpath is set up properly?

Yes. All the classes from all the application jars are loaded by the
same class loader.

Tom Hawtin
--
Unemployed English Java programmer
http://jroller.com/page/tackline/