Multiple version of Java on one machine

Is it possible to have multiple versions of Java co-exist on the same XP Pro machine?
Here is our scenario: we have apps that use Java 1.5, but we have one critical app that doesn't support that version yet. It has to use the 1.4 version. Is there a way to allow both versions to exist and be usable for their respective apps? If so, how?
Thank you.

I can't, however it's never a good idea to have
multiple versions of Java on one machine. Try and
standardise if possible. If OP used JAVA_HOME as you
often suggest, then he would be knackered wouldn't
he? JAVA_HOME can only point to one JDK. Your
advice is conflicting kaj.Nope. JAVA_HOME should always be defined in the start script/file for a java application, so it's not set per system. It's very common that companies have applications that requires different JDK/JRE versions, and it's usually very expensive to upgrade all applications (if it's possible at all). You can of course also alter the PATH variable if you want to in the script.
/Kaj

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"travis wissink" <[email protected]> wrote:
>
Jon,
We do this with very little issues. I’ll take a stab at putting this
into words.
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own Solaris
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all reference
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/home/travis/bea/app/bin/unix/*.sh,
and /home/travis/bea/app/application/portalDomain/{applicationDir}/WEB-INF/web.xml
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to
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Hope this is readable and helps
-travis
"Jon Davis" <[email protected]> wrote:
This is a little involved to explain so I'll try to be clear.
Right now we have multiple developers working on our single copy ofour
portal
running on one machine at another location. No good can come of this
and much
bad has already happened.
What we need is to be able to run different copies of our portal ondifferent
ports on that same machine. Making a copy of the domain, changing the
port and
java.io.tmpdir just confuses the first server started when the second
one goes
RUNNING. Changing the Web Application name doesn't help either.
It looks like it's only our stuff that gets cornfused when I set upmultiple
servers
(user_projects/someDomain, user_projects/someDomain2) or multiple Web
Apps (someDomain/beaApps/portalApp/webApp1,
someDomain/beaApps/portalApp/webApp2) since I can log into the console
just fine.
The Big Idea is that we need each developer to have their own sandbox
to play
in along with a demo/test copy of our software.
I've dug through the BEA docs and these news groups and have not found
anything
that directly pertains to our situation. The BEA docs are particularly
thin on
information pertaining to dealing with more than one developer or deploying
to
remote machines.
Here are some of the particulars and constraints of our setup.
We are running WebLogic Platform 7.0.0.0 on a Solaris box at another
physical
location. All access is via network. We have no root access for avariety
of
reasons.
Oracle is used for our JDBC. No Pointbase.
Our WebApp has a servlet as the starting point.
We deploy an exploded version of our servlet and JSPs for convenience.
We edit and compile our java source on Windows boxes and FTP the .class
and .jsp
files up to their proper places on the server.
Naturally, the ideal solution would be to have more than one machine
for a server.
Right now we don't have that option.
Thanks for any help that you can give,
Jon Davis

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Hello.
I have a complex but currently working setup on my win-xp/32 bit sp3 computer.
I have used photoshop since CS and am currently using CS3 extended.
Here's the complex part. I then discovered I'd like a few other programs and opted for Design Premium CS3 as it was more cost effective even though I had photoshop CS3 extended. It all is happy working together (and I don't think there's a reason it shouldn't).
What I'd like to do now, is install photoshop CS4 extended.
Will photoshop CS4 play nicely with DP CS3? I ask because I know there are so many common files and things that get shared between components that I'd hate to see something conflict where the colour picker in PCS4 for example is different and suddenly the one in say, Flash has changed to the "new" palette.
Even stranger still, would it be possible to leave photoshop CS3 on the computer as well? I know this may seem odd, but if I share this computer with people who don't need CS4 and are comfortable with their workflow. I on the other hand need the latest ACR so I have to upgrade. That again brings me to wonder if installing the latest ACR will "foul up" CS3 and it's ACR.
I know this may have been discussed at some point in the past as CS4 has been available for some time, but I thought my combination of programs and variations might make this situation unique.
Thanks in advance for any advice you can offer.

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Good luck, and wish that I had something specific to the versions in your question,
Hunt

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