joining two layers

[anonymous]

Revision: 5872
Last Changed Author: Don-vip
Last Changed Date: 2013-04-15 23:32:21 +0200 (Mon, 15 Apr 2013)
Build-Date: 2013-04-16 01:34:09
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last Changed Rev: 5872
URL: http://josm.openstreetmap.de/svn/trunk
Repository Root: http://josm.openstreetmap.de/svn

Identification: JOSM/1.5 (5872 it) Linux Ubuntu 12.04.2 LTS
Memory Usage: 417 MB / 723 MB (207 MB allocated, but free)
Java version: 1.8.0-ea, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Operating system: Linux Ubuntu 12.04.2 LTS
Dataset consistency test: No problems found

Plugin: AddrInterpolation (29435)
Plugin: FastDraw (29457)
Plugin: FixAddresses (29500)
Plugin: HouseNumberTaggingTool (29487)
Plugin: ImportImagePlugin (29435)
Plugin: OpeningHoursEditor (29435)
Plugin: PicLayer (29435)
Plugin: RoadSigns (29435)
Plugin: SimplifyArea (29435)
Plugin: buildings_tools (29435)
Plugin: continuosDownload (28565)
Plugin: contourmerge (1003)
Plugin: dataimport (29435)
Plugin: download_along (29435)
Plugin: ext_tools (29435)
Plugin: geotools (29435)
Plugin: graphview (29435)
Plugin: imageryadjust (29435)
Plugin: importvec (29435)
Plugin: irsrectify (29210)
Plugin: jts (29435)
Plugin: lakewalker (29435)
Plugin: log4j (29435)
Plugin: mirrored_download (29435)
Plugin: multipoly-convert (29435)
Plugin: namemanager (29435)
Plugin: opendata (29497)
Plugin: openstreetbugs (29435)
Plugin: pbf (29435)
Plugin: pdfimport (29435)
Plugin: photo_geotagging (29435)
Plugin: plastic_laf (29435)
Plugin: print (29435)
Plugin: proj4j (29435)
Plugin: reltoolbox (29459)
Plugin: reverter (29503)
Plugin: scripting (30300)
Plugin: tag2link (29461)
Plugin: tageditor (29435)
Plugin: tagging-preset-tester (29435)
Plugin: terracer (29435)
Plugin: utilsplugin2 (29435)
Plugin: walkingpapers (29480)
Plugin: waypoint_search (29435)
Plugin: wikipedia (29435)
Plugin: wms-turbo-challenge2 (29435)

sun.awt.X11.XException: Cannot write XdndAware property
	at sun.awt.X11.XDnDDropTargetProtocol.registerDropTarget(XDnDDropTargetProtocol.java:97)
	at sun.awt.X11.XDropTargetRegistry.registerDropSite(XDropTargetRegistry.java:571)
	at sun.awt.X11.XWindowPeer.addDropTarget(XWindowPeer.java:1929)
	at sun.awt.X11.XComponentPeer.addDropTarget(XComponentPeer.java:1330)
	at java.awt.dnd.DropTarget.addNotify(DropTarget.java:509)
	at java.awt.Component.addNotify(Component.java:6921)
	at java.awt.Container.addNotify(Container.java:2758)
	at javax.swing.JComponent.addNotify(JComponent.java:4741)
	at java.awt.Container.addNotify(Container.java:2769)
	at javax.swing.JComponent.addNotify(JComponent.java:4741)
	at java.awt.Container.addNotify(Container.java:2769)
	at javax.swing.JComponent.addNotify(JComponent.java:4741)
	at java.awt.Container.addNotify(Container.java:2769)
	at javax.swing.JComponent.addNotify(JComponent.java:4741)
	at java.awt.Container.addNotify(Container.java:2769)
	at javax.swing.JComponent.addNotify(JComponent.java:4741)
	at java.awt.Container.addNotify(Container.java:2769)
	at javax.swing.JComponent.addNotify(JComponent.java:4741)
	at javax.swing.JRootPane.addNotify(JRootPane.java:757)
	at java.awt.Container.addNotify(Container.java:2769)
	at java.awt.Window.addNotify(Window.java:770)
	at java.awt.Dialog.addNotify(Dialog.java:760)
	at java.awt.Window.pack(Window.java:807)
	at org.openstreetmap.josm.gui.PleaseWaitDialog.adjustLayout(PleaseWaitDialog.java:93)
	at org.openstreetmap.josm.gui.PleaseWaitDialog.setCustomText(PleaseWaitDialog.java:104)
	at org.openstreetmap.josm.gui.PleaseWaitDialog.initDialog(PleaseWaitDialog.java:66)
	at org.openstreetmap.josm.gui.PleaseWaitDialog.<init>(PleaseWaitDialog.java:83)
	at org.openstreetmap.josm.gui.progress.PleaseWaitProgressMonitor$4.run(PleaseWaitProgressMonitor.java:155)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:726)
	at java.awt.EventQueue.access$200(EventQueue.java:103)
	at java.awt.EventQueue$3.run(EventQueue.java:687)
	at java.awt.EventQueue$3.run(EventQueue.java:685)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:696)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:216)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:135)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:123)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:119)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:111)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)

[Don-vip]

According to ​Netbeans it's the ​JDK bug 7100524, still open but targeted in version 8.

Note that you're using an "early access" version of Java 8, likely to have more problems than the latest stable version of Java 7.