Java 6 Backward Compatible with Java 1.4?

   I've inherited a .ear application that was written using Java 2 Platform Std. Ed. v1.4.2. I need to modify it, and any sample code I'm finding is in Java 5 or 6. If I upgrade my Java version, can I feel comfortable that my application will still run? Or should I stick with my archaic version of Java to be safe?
        I'm a Java newbie, so any advice will be appreciated.
                                   Thanks!
                                             oneDayAtaTime
oneDayAtaTimeAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

VenabiliCommented:
Technically anything running on Java 1.4.2 should work in the future versions.

The technically above is because of external libraries - some of them might not be working as expected... and some might not be available at all and can be causing strange issues.

If it is an ear application, this means a application server, right? Then you are stuck at your java version unless if you want to upgrade the Server as well.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Java

From novice to tech pro — start learning today.