Multiple versions of Java concurrently?

Thread view:

Ben Bowen - 21 Sep 2006 14:49 GMT

Hi all. First, I don't even know if this is the right forum to post in,
if it's not please tell me.

I have a GUI which requires Java 1.3.1-x. Whenever I upgrade to Java 5+
the GUI ceases to work. Now I'm running into a problem where some newer
GUIs/APIs require Java 5+. Is there anyway to have multiple versions
running on a PC such that I can manually (or even better,
automatically) switch between which version is needed.

Thanks,
Ben..

Reply to this Message

opalpa@gmail.com opalinski from opalpaweb - 21 Sep 2006 19:13 GMT

I keep multiple version on my PC. I tie applications to versions by
creating scripts which setup path and classpath variables prior to
invoking java command.

THat works fine for java applications. What it does not work for is
running java software through a browser. I don't know of a quick way
to switch what java version a browser will use.

Opalinski
opalpa@gmail.com
http://www.geocities.com/opalpaweb/

> Hi all. First, I don't even know if this is the right forum to post in,
> if it's not please tell me.
[quoted text clipped - 7 lines]
> Thanks,
> Ben..

Reply to this Message

Andrew Thompson - 22 Sep 2006 00:58 GMT

...

> ...Is there anyway to have multiple versions
> running on a PC such that I can manually (or even better,
> automatically) switch between which version is needed.

Java Webstart can ensure that each application gets the
Java version it needs, but if the apps. attempt anything that
requires trust, they will need to be signed.

Andrew T.

Reply to this Message

Ben Bowen - 22 Sep 2006 12:30 GMT

I see that Webstart comes with Java 5. Will it also recognize apps that
need < Java 5?

Thanks.

> ...
> > ...Is there anyway to have multiple versions
[quoted text clipped - 6 lines]
>
> Andrew T.

Reply to this Message

Andrew Thompson - 22 Sep 2006 12:44 GMT

Please refrain from top-posting.

> > ...
> > > ...Is there anyway to have multiple versions running

...

> > Java Webstart can ensure that each application gets the
> > Java version it needs,

> I see that Webstart comes with Java 5. Will it also recognize apps that
> need < Java 5?

AFAIR - WebStart was introduced with Java 1.3,
possibly even Java 1.2 (not sure about that).
Either way, it can start up Java 1.3/1.5 as required.

(Note: Follow-ups set to c.l.j.help only)

Andrew T.

Reply to this Message

Multiple versions of Java concurrently?

Free Magazines