Re: JDK/JRE and older Java versions

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Am 22.06.24 um 17:22 schrieb Peter Nabbefeld:


Am 22.06.24 um 17:13 schrieb Peter Nabbefeld:


Am 28.04.24 um 14:51 schrieb Doug Newgard:
On Sun, 28 Apr 2024 12:44:03 +0200
Peter Nabbefeld <peter.nabbefeld@xxxxxx> wrote:

On 23.04.24 18:28, Doug Newgard wrote:
On Tue, 23 Apr 2024 08:49:21 +0200
Peter Nabbefeld <peter.nabbefeld@xxxxxx> wrote:

Hello,

as a Java developer, I sometimes need to do compatibility checking
using
older versions, often using JRE, while I need a JDK for development.

When I tried to update arch linux now, I found I cannot start any
update
because the update is blocked by setting JRE and JDK as conflicting
packages. I tried to only install JDK 21, but the update is still
being
blocked because of my older versions of the JRE.

Why do You block any software installation? I don't like the idea to
enforce me to use any specific software, or to remove any specific
one.
Is there any possibility to remove the lock-in?

Kind regards,
Peter

There is no blocking or lock-in. First off, see
https://archlinux.org/news/incoming-changes-in-jdk-jre-21-packages-may-require-manual-intervention/


which now applies to some of the older versions as well.
Yes, I've read this already before. It clearly states what I've
written
about: If I have a JRE installed, I cannot install a JDK any more.
That's my problem: I do need different JDKs and JREs for testing
purposes.

Second, exact errors, always.
"jdk-openjdk and jre-openjdk are in conflict"

Kind regards,
Peter
You didn't read very carefully then.
"The JDK variant package includes the runtime environment to execute
Java
applications"
Probaly this is just not only readable in one direction? I've understood
this as "The JRE is not needed as the JDK contains one (internally)".
Probably I was wrong.

However, I've installed these packages on my system:

$ pacman -Ss openjdk | grep -i instal
extra/jdk-openjdk 22.0.1.u0-1 [Installiert: 20.0.1.u9-3]
extra/jdk11-openjdk 11.0.23.u9-1 [Installiert: 11.0.18.u10-2]
extra/jdk17-openjdk 17.0.11.u9-1 [Installiert: 17.0.6.u10-2]
extra/jdk21-openjdk 21.0.3.u9-1 [Installiert]
extra/jdk8-openjdk 8.412.u08-1 [Installiert: 8.372.u07-1]
extra/jre-openjdk 22.0.1.u0-1 [Installiert: 20.0.1.u9-3]
extra/jre-openjdk-headless 22.0.1.u0-1 [Installiert: 20.0.1.u9-3]
extra/jre11-openjdk 11.0.23.u9-1 [Installiert: 11.0.18.u10-2]
extra/jre11-openjdk-headless 11.0.23.u9-1 [Installiert: 11.0.18.u10-2]
extra/jre17-openjdk 17.0.11.u9-1 [Installiert: 17.0.6.u10-2]
extra/jre17-openjdk-headless 17.0.11.u9-1 [Installiert: 17.0.6.u10-2]
extra/jre8-openjdk 8.412.u08-1 [Installiert: 8.372.u07-1]
extra/jre8-openjdk-headless 8.412.u08-1 [Installiert: 8.372.u07-1]
extra/openjdk-doc 22.0.1.u0-1 [Installiert: 20.0.1.u9-3]
extra/openjdk-src 22.0.1.u0-1 [Installiert: 20.0.1.u9-3]
extra/openjdk11-src 11.0.23.u9-1 [Installiert: 11.0.18.u10-2]
extra/openjdk17-src 17.0.11.u9-1 [Installiert: 17.0.6.u10-2]
extra/openjdk8-src 8.412.u08-1 [Installiert: 8.372.u07-1]

So, currently, no Java 21 or above. From what I've understood, these
packages shouldn't conflict with Java 21 and above, but it seems I have
to remove the older packages to get the newer ones ...

Kind regards,
Peter

Sorry for the German wording - of course, "Installiert" means
"installed" in English. One additional point I found: I can update
single packages using "pacman -S <package name>", but I cannot update
the whole system using "pacman -Syu", so system upgrade seems to be
broken.

Regards,
P.
Even trying to ignore the JDK-Updates does not work, using the following
entries in /etc/pacman.conf:

IgnorePkg   = jdk9-openjdk jre9-openjdk jre9-openjdk-headless
openjdk9-doc openjdk9-src
IgnorePkg   = jdk10-openjdk jre10-openjdk jre10-openjdk-headless
openjdk10-doc openjdk10-src
IgnorePkg   = jdk11-openjdk jre11-openjdk jre11-openjdk-headless
openjdk11-doc openjdk11-src
IgnorePkg   = jdk17-openjdk jre17-openjdk jre17-openjdk-headless
openjdk17-doc openjdk17-src
IgnorePkg   = jdk20-openjdk jre20-openjdk jre20-openjdk-headless
openjdk20-doc openjdk20-src
IgnorePkg   = jdk21-openjdk jre21-openjdk jre21-openjdk-headless
openjdk21-doc openjdk21-src
IgnorePkg   = jdk22-openjdk jre22-openjdk jre22-openjdk-headless
openjdk22-doc openjdk22-src

Anything else I can do?

- P.




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