java.lang.UnsupportedClassVersionError when trying to open *.ods file

[osmTOGA]

A couple days ago I tried opening a *.ods file, but unfortunately couldn't because I got an error (java.lang.UnsupportedClassVersionError) in the opendata plugin, which said it was built with version 55 and I was using version 52. For some reason I was still using Oracle Java 8 at the time, so I fixed this problem for me by simply upgrading to one of the now recommended versions.

I'm not sure if this really is an error or not, but since JOSM is advertised as supporting Java 8, I thought it might be useful to report it nonetheless. Unfortunately I can't provide a status report since I've already upgraded.

[skyper]

There was a problem with the plugin not working (loading) for some days, see #21803, and we have had several reports especially with java 8 and updating plugins.

Unless, you can reproduce and share some more information, this ticket is likely to be closed as "needinfo".

[osmTOGA]

I've reinstalled Java 8 to reproduce the error. The procedure was simply start JOSM and open the *.ods file. Thereafter I get a prompt that there's been an error that could have been caused by the opendata plugin and giving the option of trying an update. After doing that I get the following report:

URL:https://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2022-02-01 18:49:38 +0100 (Tue, 01 Feb 2022)
Build-Date:2022-02-02 02:31:07
Revision:18368
Relative:URL: ^/trunk

Identification: JOSM/1.5 (18368 de) Windows 10 64-Bit
OS Build number: Windows 10 Home 1909 (18363)
Memory Usage: 416 MB / 2222 MB (132 MB allocated, but free)
Java version: 1.8.0_321-b07, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Look and Feel: com.sun.java.swing.plaf.windows.WindowsLookAndFeel
Screen: \Display0 1920×1080 (scaling 1.00×1.00)
Maximum Screen Size: 1920×1080
Best cursor sizes: 16×16→32×32, 32×32→32×32
System property file.encoding: Cp1252
System property sun.jnu.encoding: Cp1252
Locale info: de_DE
Numbers with default locale: 1234567890 -> 1234567890

Plugins:
+ Mapillary (2.0.0-beta.2)
+ PicLayer (1.0.1)
+ RoadSigns (35893)
+ apache-commons (35893)
+ apache-http (35893)
+ buildings_tools (35893)
+ continuosDownload (99)
+ ejml (35893)
+ geochat (35893)
+ geotools (35906)
+ imagery_offset_db (35893)
+ jaxb (35893)
+ jna (35893)
+ jts (35893)
+ measurement (35893)
+ opendata (35899)
+ reverter (35893)
+ terracer (35893)
+ todo (30306)
+ turnrestrictions (35893)
+ undelete (35893)
+ utilsplugin2 (35893)

Tagging presets:
+ https://josm.openstreetmap.de/josmfile?page=Presets/LaneAttributes&preset&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/MastAndTower&zip=1

Map paint styles:
- https://josm.openstreetmap.de/josmfile?page=Styles/AddressValidator&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Lane_and_Road_Attributes&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Sidewalks&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/LessObtrusiveNodes&style&zip=1
- https://github.com/hotosm/HDM-JOSM-style/archive/master.zip
- https://josm.openstreetmap.de/josmfile?page=Styles/Maxspeed&zip=1
+ %UserProfile%\...\Power_lines.mapcss
- https://josm.openstreetmap.de/josmfile?page=Styles/TigerReviewedNo&zip=1

Last errors/warnings:
- 00099.503 E: Handled by bug report queue: java.lang.UnsupportedClassVersionError: org/jopendocument/model/OpenDocument has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0



=== REPORTED CRASH DATA ===
BugReportExceptionHandler#handleException:
No data collected.

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: main-worker-0 (18) of main
java.lang.UnsupportedClassVersionError: org/jopendocument/model/OpenDocument has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(Unknown Source)
	at java.security.SecureClassLoader.defineClass(Unknown Source)
	at java.net.URLClassLoader.defineClass(Unknown Source)
	at java.net.URLClassLoader.access$100(Unknown Source)
	at java.net.URLClassLoader$1.run(Unknown Source)
	at java.net.URLClassLoader$1.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at org.openstreetmap.josm.plugins.PluginClassLoader.loadClass(PluginClassLoader.java:74)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at org.openstreetmap.josm.plugins.opendata.core.io.tabular.OdsImporter.parseDataSet(OdsImporter.java:29)
	at org.openstreetmap.josm.gui.io.importexport.OsmImporter.loadLayer(OsmImporter.java:121)
	at org.openstreetmap.josm.gui.io.importexport.OsmImporter.importData(OsmImporter.java:97)
	at org.openstreetmap.josm.plugins.opendata.core.io.AbstractImporter.importData(AbstractImporter.java:59)
	at org.openstreetmap.josm.gui.io.importexport.FileImporter.importDataHandleExceptions(FileImporter.java:103)
	at org.openstreetmap.josm.actions.OpenFileAction$OpenFileTask.importData(OpenFileAction.java:401)
	at org.openstreetmap.josm.actions.OpenFileAction$OpenFileTask.realRun(OpenFileAction.java:350)
	at org.openstreetmap.josm.gui.PleaseWaitRunnable.doRealRun(PleaseWaitRunnable.java:94)
	at org.openstreetmap.josm.gui.PleaseWaitRunnable.run(PleaseWaitRunnable.java:142)
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
	at java.util.concurrent.FutureTask.run(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)

[skyper]

Thanks.

[taylor.smock]

In 35910/osm:

opendata: Appropriately set the Java release version

This fixes #21830: java.lang.UnsupportedClassVersionError when trying to open *.ods file

This was caused by compiling the opendata plugin with Java 11, where everything
in the includes directory was compiled with Java 11 instead of Java 8
(java.lang.version defaults to Java 8).

[taylor.smock]

In 35911/osm:

opendata (dist): Appropriately set the Java release version

See #21830: java.lang.UnsupportedClassVersionError when trying to open *.ods file

This was caused by compiling the opendata plugin with Java 11, where everything
in the includes directory was compiled with Java 11 instead of Java 8
(java.lang.version defaults to Java 8).