OpenJDK and OracleJDK

Jomar808 · February 9, 2012, 11:36pm

Hello good day!

I do have a question

Is openjdk a full impletation of sun-java-jdk? I’m a junior java programmer. Can I run into some issues using openjdk like incompatibility with sun-java-jdk? Mostly I develop desktop applications(used mostly in win)

So are there any drawbacks of using openjdk?

Thank you in advance

Long Live Linux and OpenSUSE

deano_ferrari · February 10, 2012, 3:05am

I think Martin already tried to answer this question for you

http://forums.opensuse.org/english/get-technical-help-here/applications/471836-install-java-opensuse-12-1-a-2.html#post2435654

So are there any drawbacks of using openjdk?

From a programming perspective, I wouldn’t have thought so. I’m using OpenJDK (as a regular user) without any issues, but there may be specific apps that do not adhere to the standards.

Have a read of this too:

[opensuse-java] Focusing on OpenJDK - Sun/Oracle JDK will not be in 12.1](http://lists4.suse.de/opensuse-java/2011-09/msg00000.html)

tsu2 · February 12, 2012, 11:59pm

I had to refresh my info on this not long ago.
The references by deano are opinions based on events in 2008… which IMO is quite awhile ago.

It might be a bit confusing, but Java 7 is supposed to be when both proprietary and “open” efforts are supposed to converge. Because that announcement was made when v5 and v6 were “current” it provided an objective for both efforts.

Today, we’re still not quite there yet, “current” is still 6 (ie openJDK 1.6), but from what I’ve read the efforts are <very> close… the proprietary Sun/Oracle and the “open” openJDK are supposed to be 99% compatible from a utility standpoint, the remaining 1% is supposed to be mostly related to the method of compiling (which is one of the reasons why Sun/Oracle couldn’t be made public immediately).

So, currently it’s <believed> that there should not be any usability differences at all, but no one is going to guarantee it…

TS

martin_helm · February 13, 2012, 1:31am

I am myself a developer in my job, the last years almost 99% Java
development (a decade ago mainly C++, times change rapidly). I use both
the Sun/Oracle version and the OpenJDK for the same programs to compile
them and run them (and also compile on one and run on the other), I
switched from my previous way using the proprietary version for
development and the OpenJDK only as a proof of concept for compiling the
programs and running them to the exactly opposite way last year after a
lot of testing.
I speak here about different software packages developed in the company
I work for with an order of magnitude of ranging from 100,000 to 1
million lines of code (not counting the third party code in libraries we
do not develop) and also a lot of small Java tools (several 100 LoC to
several 1000 LoC).

While I noticed with early versions of the OpenJDK 1.6 some
incompatibilities I simply cannot see them any more since about a year
or somewhat longer.

Maybe others in other fields using different Java technologies and
libraries can still find one or the other incompatibility, I do not. So
let me recommend to start with the OpenJDK.

Just my 2ct.