I'll stand corrected with the versions of java, it's obviously not my thing, but simply put, I've never *ever* had openjdk work properly for anything Java that wasn't specifically built in openjdk.  I just don't bother with it usually as most everything is typically built/tested around Oracle and Oracle only.

This proved itself true last week firing up JBidwatcher on this system, only had openjdk, and wouldn't even launch with it.  I had to put oracle java on it to work still.

Most enterprise java apps I have seen in use in businesses require specific, usually outdated/insecure versions, never get updates because they break the apps, and rarely work on anything but the platforms they were built on, so I call bullocks on the compatibility play.  It sounds great in theory, but every practical application I've seen in use in enterprise ended up a bloody mess.

Much like Flash now, it's just a zombie that won't die, but should imho.

-mb


On Mon, May 4, 2020 at 10:33 PM Joseph Sinclair via PLUG-discuss <plug-discuss@lists.phxlinux.org> wrote:
Sorry, Michael, but this is complete bunk.

On 2020-05-04 11:29 AM, Michael Butash via PLUG-discuss wrote:
> Again OpenJDK and OracleJRE are totally different - including version
> numbers.  If someone says "works with Java 8", they 99.9% of the time mean
> OracleJRE and their versions, and theirs only.

Oracle JRE or JDK is a repackaged OpenJDK build, and nothing more.  The version numbers are identical.  The code is identical.  The build process is identical.  The only thing you get with Oracle builds is the *option* to pay for Oracle commercial support.
In fact, any package in any Linux distro labeled OpenJDK is generally a packaging of the Oracle build, which is why OpenJDK 8 builds are no longer available easily, as Oracle pulled Java 8 to commercial-only support last year.

>
> OpenJDK is only ever used with, well, I don't even know anymore, as
> everyone Open Source moved on to hate Java, Oracle, Larry Ellison, etc.
OpenJDK is, and has always been Open under GPL3
If you want fully open and community (or commercial from not-Oracle) builds of any recent Java version (8+) you can get those from adoptopenjdk.org, which is a consortium of large and small companies that are supporting continued open access to the GPL3 source code and builds of the Java system.
A huge amount of the internet is running OpenJDK, and a vast array of systems are transitioning to the adoptopenjdk builds simply to ensure continued access to support from multiple vendors.

> You can pretty safely remove/forget OpenJDK as an end-user at this point I
> think, unless something specifically mentions needing it.
If you're running Linux, and you need Java, you should be installing the OpenJDK package from your distribution, if nothing else to ensure continued and frequent updates along with the rest of the system.
If there is an option for adoptopenjdk for those packages, that's a good choice, but the builds from the distribution for Java are made from the official codebase that underpins all builds, including Oracle's.

>
> -mb
>

Joseph Sinclair

>
> On Mon, May 4, 2020 at 11:24 AM Michael <bmike1@gmail.com> wrote:
>
>> Thanks for the tip!
>> So then looking at it it looks as if I have Java 11 installed. Is that
>> correct?
>>
>> apt search oracle jre
>> ...
>> i   openjdk-11-jre                                       - OpenJDK
>> Java runtime, using Hotspot JIT
>> p   openjdk-11-jre:i386                                  - OpenJDK
>> Java runtime, using Hotspot JIT
>> p   openjdk-11-jre-dcevm                                 - Alternative
>> VM for OpenJDK 11 with enhanced class redefinition
>> p   openjdk-11-jre-dcevm:i386                            - Alternative
>> VM for OpenJDK 11 with enhanced class redefinition
>> i   openjdk-11-jre-headless                              - OpenJDK
>> Java runtime, using Hotspot JIT (headless)
>> p   openjdk-11-jre-headless:i386                         - OpenJDK
>> Java runtime, using Hotspot JIT (headless)
>> p   openjdk-11-jre-zero                                  - Alternative
>> JVM for OpenJDK, using Zero
>> p   openjdk-11-jre-zero:i386                             - Alternative
>> JVM for OpenJDK, using Zero
>> p   openjdk-8-jre                                        - OpenJDK
>> Java runtime, using Hotspot JIT
>> p   openjdk-8-jre:i386                                   - OpenJDK
>> Java runtime, using Hotspot JIT
>> p   openjdk-8-jre-dcevm                                  - Alternative
>> VM for OpenJDK 8 with enhanced class redefinition
>> p   openjdk-8-jre-dcevm:i386                             - Alternative
>> VM for OpenJDK 8 with enhanced class redefinition
>> p   openjdk-8-jre-headless                               - OpenJDK
>> Java runtime, using Hotspot JIT (headless)
>> p   openjdk-8-jre-headless:i386                          - OpenJDK
>> Java runtime, using Hotspot JIT (headless)
>> p   openjdk-8-jre-zero                                   - Alternative
>> JVM for OpenJDK, using Zero/Shark
>> p   openjdk-8-jre-zero:i386                              - Alternative
>> JVM for OpenJDK, using Zero/Shark
>> p   spamoracle                                           - statistical
>> analysis spam filter based on Bayes' formula
>> p   spamoracle:i386                                      - statistical
>> analysis spam filter based on Bayes' formula
>> v   spamoracle-byte                                      -
>> v   spamoracle-byte:i386                                 -
>>
>> On Mon, May 4, 2020 at 2:12 PM Michael Butash <michael@butash.net> wrote:
>>>
>>> OpenJDK and Oracle JRE are two very different beasts.  Most java
>> software is developed against Oracle Java, and if so, rarely I find they
>> ever work on OpenJDK.
>>>
>>> Look up switching to "oracle jre" on your system, Java 8 as they want.
>> I had to figure this out on my arch system recently, ubuntu should just
>> have to install it, and switch the system to use it, just forget how now.
>> If nothing else, start with "apt search oracle jre".
>>>
>>> Nothing Java ever amounts to any good I've found after ~20 years of it,
>> I try to use Java as little as possible, scorning any software and hardware
>> (ahem, Cisco) that uses it still.  Anything Java behaves badly under linux
>> for me, and the only thing java app I suffer is JBidwatcher for ebay
>> sniping deals.  It behaves badly, randomly, but still the only darn thing I
>> can find like it free.
>>>
>>> -mb
>>>
>>>
>>> On Mon, May 4, 2020 at 9:50 AM Michael via PLUG-discuss <
>> plug-discuss@lists.phxlinux.org> wrote:
>>>>
>>>> I want to download a program, ImageJ. I went to the download page and
>> see:
>>>>
>>>> Unfortunately, due to the ongoing transition from Java 6 to Java 8,
>>>> this download of "plain ImageJ2" cannot currently be updated to the
>>>> latest Java-8-compatible version. See the Java 8 page for details. For
>>>> the time being, we recommend using the Fiji distribution of ImageJ to
>>>> stay current with updates.
>>>>
>>>> Curious as to what version of Java I have....
>>>>
>>>> ~$ java -version
>>>> openjdk version "11.0.7" 2020-04-14
>>>> OpenJDK Runtime Environment (build 11.0.7+10-post-Ubuntu-2ubuntu218.04)
>>>> OpenJDK 64-Bit Server VM (build 11.0.7+10-post-Ubuntu-2ubuntu218.04,
>>>> mixed mode, sharing)
>>>>
>>>> So they are a bit behind?
>>>> --
>>>> :-)~MIKE~(-:
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>>>> PLUG-discuss mailing list - PLUG-discuss@lists.phxlinux.org
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>>
>>
>>
>> --
>> :-)~MIKE~(-:
>>
>
>
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