UnsupportedClassVersionError: org/matsim/contrib/josm/MATSimPlugin has been compiled by a more recent version

[anonymous]

What steps will reproduce the problem?

What is the expected result?

What happens instead?

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

URL:https://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2020-12-28 22:03:23 +0100 (Mon, 28 Dec 2020)
Build-Date:2020-12-29 02:30:53
Revision:17428
Relative:URL: ^/trunk

Identification: JOSM/1.5 (17428 zh_CN) Windows 10 64-Bit
OS Build number: Windows 10 Pro 2004 (19041)
Memory Usage: 830 MB / 1820 MB (446 MB allocated, but free)
Java version: 1.8.0_281-b09, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Look and Feel: com.sun.java.swing.plaf.windows.WindowsLookAndFeel
Screen: \Display0 2560×1440 (scaling 1.00×1.00)
Maximum Screen Size: 2560×1440
Best cursor sizes: 16×16→32×32, 32×32→32×32
Program arguments: [%UserProfile%\Desktop\AachenMap.osm]

Plugins:
+ apache-commons (35524)
+ ejml (35458)
+ geotools (35458)
+ imagery_offset_db (35640)
+ javafx-windows (35655)
+ jts (35458)
+ matsim
+ turnrestrictions

Last errors/warnings:
- 00003.022 E: java.io.IOException: Cannot run program "powershell": CreateProcess error=2, 系统找不到指定的文件。. 原因： java.io.IOException: CreateProcess error=2, 系统找不到指定的文件。
- 00021.214 W: Cannot lock cache directory. Will not use disk cache
- 00023.400 E: Handled by bug report queue: java.lang.UnsupportedClassVersionError: org/matsim/contrib/josm/MATSimPlugin 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 (1)
java.lang.UnsupportedClassVersionError: org/matsim/contrib/josm/MATSimPlugin 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:73)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Unknown Source)
	at org.openstreetmap.josm.plugins.PluginInformation.loadClass(PluginInformation.java:382)
	at org.openstreetmap.josm.plugins.PluginHandler.loadPlugin(PluginHandler.java:800)
	at org.openstreetmap.josm.plugins.PluginHandler.loadPlugins(PluginHandler.java:889)
	at org.openstreetmap.josm.plugins.PluginHandler.loadLatePlugins(PluginHandler.java:941)
	at org.openstreetmap.josm.gui.MainApplication.loadLatePlugins(MainApplication.java:1158)
	at org.openstreetmap.josm.gui.MainApplication.mainJOSM(MainApplication.java:922)
	at org.openstreetmap.josm.gui.MainApplication$3.processArguments(MainApplication.java:277)
	at org.openstreetmap.josm.gui.MainApplication.main(MainApplication.java:714)

[Don-vip]

Ticket #20548 has been marked as a duplicate of this ticket.

[Don-vip]

Fixed through ​https://github.com/matsim-org/josm-matsim-plugin/issues/113