Re: goodbye Oracle Java, hello OpenJDK

[Pete Helgren <pete@xxxxxxxxxx>]

I should have clarified for Jack when he responded, but  don't know 
*everything* about Java, even though it is my primary language.  I 
figured Jack was in the know about some unknown skunk works project 
where Oracle had ported the J9 itself (which would have been a weird 
full-circle endeavor).

The IBM J9 has been rock solid on IBM i.  Fast, too, when they developed 
the 32bit version.  When Oracle announced the licensing change, I 
quickly switched my desktop version to OpenJ9 (version 8, BTW) and it 
worked well until I experienced some weirdness with Liferay (7.0).  I 
reported it to the OpenJ9 folks and it is currently stalled.  It has to 
do with the SASS compiler.  So right now I have issues with the Liferay 
JSON implementation for serialization/deserialization.  I have issues 
with the SASS compiler and also it seems that Elasticsearch isn't 
supported in the IBM J9 environment 
(https://www.elastic.co/support/matrix#matrix_jvm ) even though it  IS 
supported in OpenJDK and presumably in OpenJ9 and the builds from the 
AdoptOpenJDK project.  My issues in Windows and Liferay come from use of 
jdk8u222-b10_openj9-0.15.1

The challenge in the Java World is remembering that all JVM's are not 
created equal, even at the same version.  Oracle's purchase of Sun has 
been good for Java because the forks of the JVM code have led to greater 
independence and cross platform  compatibility, but it is still a little 
bit in the trial and error mode when it comes to apps written in Java.  
You hope there aren't any dependencies on a Sun package name that will 
come back to haunt you.

I wish IBM had purchased the Sun assets in Java, but that debate is long 
over...

Pete Helgren
www.petesworkshop.com
GIAC Secure Software Programmer-Java
Twitter - Sys_i_Geek  IBM_i_Geek

On 9/6/2019 7:45 PM, David Gibbs via MIDRANGE-L wrote:
> > A while ago IBM made it open source, relabeled it as OpenJ9, and donated
> > it to
> > the Eclipse foundation.
> >
> > https://www.eclipse.org/openj9/
> OpenJ9 has none of the stupid licensing restrictions that Oracle java does.
>
> david