Josm cannot be installed in Ubuntu 24 LTS without warnings

[gys.de.jongh@…]

What steps will reproduce the problem?

Ubuntu Noble Numbat 24 LTS

sudo apt update

Error josm could not be updated
Public Key was not signed

Corrected according to : josm.openstreetmap.de/wiki/Download

Switched computer off and back on

sudo apt update successfull no more errors

App Center Search for apps => josm => See all results for "josm" => A) Filter by Debian packages

No results found for "josm" => B) Filter by Snap packages josm Michael Vogt Editor for OpenStreettMap

Suggestion in ticket #2379 install other software is not possible

Suggestion in ticket #2379 snap is unstable and beta : snap 9-Dec-2014 and Ubuntu Jun 2016

Choose option B) => Install => No errors => Latest Stable r19067

Switch computer off and back on

Start Josm => Warning :

You should update!
JOSM soon will no longer support this version of Java, you should update to version 17 or better!

What is the expected result?

I expected Josm to start without errors

What happens instead?

Start Josm => Warning :

You should update!
JOSM soon will no longer support this version of Java, you should update to version 17 or better!

Download map data => Download from OSM => Slippy map => Select piece of the map => Download

Help About JOSM => Info:

Version 19067
Last change at 2024-05-02 01:31:13
Java Version 11.0.22

Help About JOSM => Installation Details :

Symbolic names for directories and the actual paths :
$(JAVA_HOME) /snap/josm/142/usr/lib/jvm/default-java/jre

myself@LuxTop:~$ sudo ls /snap/josm/142/usr/lib/jvm
default-java java-1.11.0-openjdk-amd64 java-11-openjdk-amd64

myself@LuxTop:~$ sudo update-alternatives --config java
[sudo] password for myself:
There is 1 choice for the alternative java (providing /usr/bin/java).

Selection Path Priority Status

---

• 0 /usr/lib/jvm/java-21-openjdk-amd64/bin/java 2111 auto mode 1 /usr/lib/jvm/java-21-openjdk-amd64/bin/java 2111 manual mode

Press <enter> to keep the current choice[*], or type selection number: 0

myself@LuxTop:~$ java --version
openjdk 21.0.3 2024-04-16
OpenJDK Runtime Environment (build 21.0.3+9-Ubuntu-1ubuntu1)
OpenJDK 64-Bit Server VM (build 21.0.3+9-Ubuntu-1ubuntu1, mixed mode, sharing)

So,
In Ubuntu 24 LTS

The Public Key is not signed
/snap/josm/142/usr/lib/jvm contains the outdated java-11-openjdk-amd64
and not the available openjdk 21.0.3 2024-04-16

Please provide any additional information below. Attach a screenshot if possible.

Relative:URL: ^/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2024-04-29 18:37:36 +0200 (Mon, 29 Apr 2024)
Revision:19067
Build-Date:2024-05-02 01:31:13
URL:https://josm.openstreetmap.de/svn/trunk

Identification: JOSM/1.5 (19067 en) Linux Ubuntu 24.04 LTS
Memory Usage: 370 MB / 1962 MB (141 MB allocated, but free)
Java version: 11.0.22+7-post-Ubuntu-0ubuntu220.04.1, Ubuntu, OpenJDK 64-Bit Server VM
Look and Feel: javax.swing.plaf.metal.MetalLookAndFeel
Screen: :0.0 1366×768 (scaling 1.00×1.00)
Maximum Screen Size: 1366×768
Best cursor sizes: 16×16→16×16, 32×32→32×32
Environment variable LANG: en_US.UTF-8
System property file.encoding: ANSI_X3.4-1968
System property sun.jnu.encoding: ANSI_X3.4-1968
Locale info: en_US
Numbers with default locale: 1234567890 -> 1234567890
Desktop environment: ubuntu:GNOME
VM arguments: [-Duser.home=${HOME}, --add-exports=java.base/sun.security.action=ALL-UNNAMED, --add-exports=java.desktop/com.sun.imageio.plugins.jpeg=ALL-UNNAMED, --add-exports=java.desktop/com.sun.imageio.spi=ALL-UNNAMED]
Dataset consistency test: No problems found

[stoecker]

Your text is very confusing. You mixed a lot of stuff together which doesn't belong.

First you made an error with the repo and thus got the "not signed" message, but after you fixed this (but without saying what you fixed, so we can't verify whether your fix was ok or bogus as well), you installed the snap package instead which is not provided by us.

If you have an issue with the snap package then open a bug report with the authors of the snap.

If you want to report a bug here, then please also install the stuff we provide and not something else.

I suggest you reread the instructions and start from scratch and report here the results.