an unexpected exception occourred. >> josm 11.427 + ubuntu 14.04 lts

[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.

Relative:URL: ^/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2017-01-02 00:53:29 +0100 (Mon, 02 Jan 2017)
Revision:11427
Build-Date:2017-01-02 02:33:21
URL:http://josm.openstreetmap.de/svn/trunk

Identification: JOSM/1.5 (11427 it) Linux Ubuntu 14.04.5 LTS
Memory Usage: 58 MB / 926 MB (29 MB allocated, but free)
Java version: 9-ea+152, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Screen: :0.0 1920x1080
Maximum Screen Size: 1920x1080
VM arguments: [-Djosm.restart=true, -Djava.net.useSystemProxies=true]

Last errors/warnings:
- E: Handled by bug report queue: java.lang.reflect.InaccessibleObjectException: Unable to make field private static java.util.ResourceBundle java.awt.Toolkit.resources accessible: module java.desktop does not "opens java.awt" to unnamed module @d6e7bab


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

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: main (1)
java.lang.reflect.InaccessibleObjectException: Unable to make field private static java.util.ResourceBundle java.awt.Toolkit.resources accessible: module java.desktop does not "opens java.awt" to unnamed module @d6e7bab
	at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:207)
	at java.base/java.lang.reflect.Field.checkCanSetAccessible(Field.java:171)
	at java.base/java.lang.reflect.Field.setAccessible(Field.java:165)
	at org.openstreetmap.josm.tools.Utils.lambda$setObjectsAccessible$0(Utils.java:1463)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at org.openstreetmap.josm.tools.Utils.setObjectsAccessible(Utils.java:1461)
	at org.openstreetmap.josm.data.Preferences.updateSystemProperties(Preferences.java:1429)
	at org.openstreetmap.josm.data.Preferences.load(Preferences.java:662)
	at org.openstreetmap.josm.data.Preferences.init(Preferences.java:763)
	at org.openstreetmap.josm.gui.MainApplication.main(MainApplication.java:255)

[Don-vip]

Closed as duplicate of #14211.
Please note that java 9 is not supported yet. We advise you to stay with Java 8 if you're not a Java developer.