[rules-users] Java 1.4 Application

Thu Aug 4 06:00:17 EDT 2011

Putting it very bluntly in my opinion it is crazy to intentionally pick a very old version of a library because you are stuck on an ancient version of java.
Generally migrating from Java 1.4 to a later version should be painless - there's a risk of issues with subtle changes in how java handled strings buffers but most people wouldn't hit that. Generally it should be a case of (optionally) recompiling and running it in an up to date JVM and doing some regression testing. 

I'd strongly recommend doing this before or as part of your rules engine work (afterall you're going to have to do a load of regression testing anyway).

If you are leaving the migration till later remember java 6 only has 13 months of life left in it and you'd really be wanting to migrate to java 7!

Thomas

> -----Original Message-----
> From: rules-users-bounces at lists.jboss.org [mailto:rules-users-
> bounces at lists.jboss.org] On Behalf Of Sumeet Karawal
> Sent: 04 August 2011 10:34
> To: Rules Users List
> Subject: Re: [rules-users] Java 1.4 Application
> 
> Thanks for the reply.
> 
> Actually I have to work on an Application that is based on Java 1.4 and there
> haven't been any major changes in the code, currently business logic is
> managed through Java code only. But now we are trying to have a rule
> engine for the purpose. There will be a migration to Java 6 but not in the near
> future.
> 
> Regards,
> Sumeet Karawal
> Mailto: sumeet.karawal at tcs.com
> 
> 
> 
>   From:       "Swindells, Thomas" <TSwindells at nds.com>
> 
>   To:         Rules Users List <rules-users at lists.jboss.org>
> 
>   Date:       08/01/2011 01:09 PM
> 
>   Subject:    Re: [rules-users] Java 1.4 Application
> 
>   Sent by:    rules-users-bounces at lists.jboss.org
> 
> 
> 
> 
> 
> 
> Any reason why you are still on java 1.4?
> You are using a java version that is now 3 major versions out of date and that
> hasn't been supported by sun/oracle for the last 3 years!
> It's the equivalent of still using windows 98!
> Thomas
> 
> > -----Original Message-----
> > From: rules-users-bounces at lists.jboss.org [mailto:rules-users-
> > bounces at lists.jboss.org] On Behalf Of DroolersEye
> > Sent: 27 July 2011 17:06
> > To: rules-users at lists.jboss.org
> > Subject: Re: [rules-users] Java 1.4 Application
> >
> >
> > Drools5 works with JDK1.5 and above.
> >
> > Drools 5.0 will split up into 4 main sub projects,
> >
> > Drools Guvnor (BRMS/BPMS)
> >
> > Drools Expert (rule engine),
> >
> > Drools Flow (process/workflow)
> >
> > Drools Fusion (cep/temporal reasoning)
> >
> > the above projects are not available in drools 4.0 except drools rule
> engine
> > even drools expert 5.x is a major update over the previous Drools 4.
> > Drools4 works fine with jdk 1.4.
> > selecting drools 4.version based on the jdk version may not be good
> > idea,
> we
> > may lose lots of advanced functionalities provided by drools current
> versions.
> > Current version is 5.2 Final (Auguest 2011 Mark team going to release
> 5.3).
> >
> >
> > -----
> > with kind regards,
> >
> > --
> > View this message in context: http://drools.46999.n3.nabble.com/rules-
> > users-Java-1-4-Application-tp3199965p3203906.html
> > Sent from the Drools: User forum mailing list archive at Nabble.com.
> > _______________________________________________
> > rules-users mailing list
> > rules-users at lists.jboss.org
> > https://lists.jboss.org/mailman/listinfo/rules-users
> 
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