id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
13150	Unit test regressions with jdk9	Don-vip	team	"18 more tests are failing with java 9:

[/jenkins/job/Java-EarlyAccess-JOSM/jdk=JDK9/lastCompletedBuild/testReport]

Looks like the same stacktrace everywhere:

{{{
java.lang.IllegalStateException: Dialog was already created
	at org.openstreetmap.josm.gui.dialogs.LayerListDialog.createInstance(LayerListDialog.java:99)
	at org.openstreetmap.josm.gui.MapFrame.<init>(MapFrame.java:263)
	at org.openstreetmap.josm.gui.MainPanel.createNewMapFrame(MainPanel.java:88)
	at org.openstreetmap.josm.gui.MainPanel.updateContent(MainPanel.java:63)
	at org.openstreetmap.josm.gui.MainPanel$1.beforeFirstLayerAdded(MainPanel.java:157)
	at org.openstreetmap.josm.gui.layer.MainLayerManager.realAddLayer(MainLayerManager.java:268)
	at org.openstreetmap.josm.gui.layer.LayerManager$1.run(LayerManager.java:183)
	at org.openstreetmap.josm.gui.util.GuiHelper.runInEDTAndWaitWithException(GuiHelper.java:146)
	at org.openstreetmap.josm.gui.layer.LayerManager.addLayer(LayerManager.java:180)
	at org.openstreetmap.josm.JOSMFixture.setupGUI(JOSMFixture.java:147)
	at org.openstreetmap.josm.JOSMFixture.access$000(JOSMFixture.java:28)
	at org.openstreetmap.josm.JOSMFixture$1.run(JOSMFixture.java:126)
	at java.awt.event.InvocationEvent.dispatch(java.desktop@9-ea/InvocationEvent.java:303)
	at java.awt.EventQueue.dispatchEventImpl(java.desktop@9-ea/EventQueue.java:759)
	at java.awt.EventQueue.access$500(java.desktop@9-ea/EventQueue.java:97)
	at java.awt.EventQueue$3.run(java.desktop@9-ea/EventQueue.java:712)
	at java.awt.EventQueue$3.run(java.desktop@9-ea/EventQueue.java:706)
	at java.security.AccessController.doPrivileged(java.base@9-ea/Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(java.base@9-ea/ProtectionDomain.java:77)
	at java.awt.EventQueue.dispatchEvent(java.desktop@9-ea/EventQueue.java:729)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(java.desktop@9-ea/EventDispatchThread.java:199)
	at java.awt.EventDispatchThread.pumpEventsForFilter(java.desktop@9-ea/EventDispatchThread.java:124)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(java.desktop@9-ea/EventDispatchThread.java:113)
	at java.awt.EventDispatchThread.pumpEvents(java.desktop@9-ea/EventDispatchThread.java:109)
	at java.awt.EventDispatchThread.pumpEvents(java.desktop@9-ea/EventDispatchThread.java:101)
	at java.awt.EventDispatchThread.run(java.desktop@9-ea/EventDispatchThread.java:90)
}}}
"	defect	closed	normal	16.07	Unit tests		fixed	regression gsoc-core java9	michael2402