notes.txt

Thu 08 Dec 2022 10:35:07 PM EST

Ugh. Eclipse issues.

So at first Eclipse defaulted to a JRE17 tha MAY have been JRE only?

openjdk11 IS installed.

(base) sean@rockyraccoon:~$ java --version
openjdk 11.0.17 2022-10-18
OpenJDK Runtime Environment (build 11.0.17+8-post-Ubuntu-1ubuntu220.04)
OpenJDK 64-Bit Server VM (build 11.0.17+8-post-Ubuntu-1ubuntu220.04, mixed mode, sharing)
(base) sean@rockyraccoon:~$ which java
/usr/bin/java
(base) sean@rockyraccoon:~$ ls -l /usr/bin/java
lrwxrwxrwx 1 root root 22 Nov 18  2021 /usr/bin/java -> /etc/alternatives/java
(base) sean@rockyraccoon:~$ ls /etc/alternatives/ja
jaotc           jar.1.gz        jarsigner.1.gz  java.1.gz       javac.1.gz      javadoc.1.gz    javap.1.gz
jar             jarsigner       java            javac           javadoc         javap
(base) sean@rockyraccoon:~$ ls /etc/alternatives/java
/etc/alternatives/java
(base) sean@rockyraccoon:~$ ls -l  /etc/alternatives/java
lrwxrwxrwx 1 root root 43 Nov 18  2021 /etc/alternatives/java -> /usr/lib/jvm/java-11-openjdk-amd64/bin/java
(base) sean@rockyraccoon:~$ ls /usr/lib/jvm/java-1
java-1.11.0-openjdk-amd64/ java-11-openjdk-amd64/
(base) sean@rockyraccoon:~$ ls /usr/lib/jvm/java-11-openjdk-amd64/
bin  conf  docs  include  jmods  legal  lib  man  release
(base) sean@rockyraccoon:~$

So first I needed to open the workspace preferences and add
it... which turned out to be a huge issue.

Window->Preferences, Installed JREs, then click on Search button and
navigate to /usr/lib/jvm and click Open button

Then check next to java-11-openjdk-amd64

But wait, we're not done yet.  Then right click on the project,
Properties, in the dialog click Java build path , click on the current
JRE under Modulepath, then click Edit button.  Click on the radio
button next to "Workspace default" which is now java-11-openjdk-amd6.

But wait, there's more!  Eclipse couldn't find JFrame/JPanel;

https://stackoverflow.com/questions/23209125/unable-to-import-javax-swing-jframe

In package explorer for the project, open module-info.java and add
theline "requires java.desktop;" between the {} brackets.

Whew.

JMapViewer, sources and binary;

https://github.com/openstreetmap/svn-archive/blob/main/applications/viewer/jmapviewer/releases/2.14/JMapViewer-2.14-Source.zip?raw=true
https://github.com/openstreetmap/svn-archive/blob/main/applications/viewer/jmapviewer/releases/2.14/JMapViewer-2.14.zip?raw=true


Similar problem with "inaccessible" import for jmapviewer, even after
i added the jar to the build path.

According to this thread;

https://www.eclipse.org/forums/index.php/t/1103208/

You can just delete module-info.java and it will work.

So I did and it does indeed seem to work now.  At least no more error on the import.

More on modules here;

https://www.eclipse.org/community/eclipse_newsletter/2018/june/java9andbeyond.php