Re: question about Java

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Author: Michael Butash via PLUG-discuss
Date:  
To: Michael
CC: Michael Butash, Main PLUG discussion list
Subject: Re: question about Java
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.

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.
You can pretty safely remove/forget OpenJDK as an end-user at this point I
think, unless something specifically mentions needing it.

-mb


On Mon, May 4, 2020 at 11:24 AM Michael <> 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 <> 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 <
> > 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~(-:
> >> ---------------------------------------------------
> >> PLUG-discuss mailing list -
> >> To subscribe, unsubscribe, or to change your mail settings:
> >> https://lists.phxlinux.org/mailman/listinfo/plug-discuss
>
>
>
> --
> :-)~MIKE~(-:
>
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