NPE

[Vort_]

What steps will reproduce the problem?

I don't know exactly what caused this error.
Last opened window was property editor.

What is the expected result?

What happens instead?

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

URL:http://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2015-11-24 00:04:12 +0100 (Tue, 24 Nov 2015)
Build-Date:2015-11-23 23:14:21
Revision:9060
Relative:URL: ^/trunk

Identification: JOSM/1.5 (9060 ru) Windows 7 64-Bit
Memory Usage: 801 MB / 1801 MB (559 MB allocated, but free)
Java version: 1.8.0_05, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
VM arguments: [-Djava.security.policy=file:D:\Java_x64\jre8\lib\security\javaws.policy, -DtrustProxy=true, -Djnlpx.home=<java.home>\bin, -Djnlpx.origFilenameArg=C:\Users\Vort\AppData\LocalLow\Sun\Java\Deployment\cache\6.0\56\1ee8cfb8-564901be, -Djnlpx.remove=false, -Dsun.awt.warmup=true, -Djava.util.Arrays.useLegacyMergeSort=true, -Djnlpx.splashport=49620, -Djnlp.application.href=https://josm.openstreetmap.de/download/josm.jnlp, -Djnlpx.jvm=<java.home>\bin\javaw.exe, -Djnlpx.vmargs=-Djava.util.Arrays.useLegacyMergeSort=true -d64 -Djnlp.application.href=https://josm.openstreetmap.de/download/josm.jnlp]
Dataset consistency test: No problems found

Plugins:
- ext_tools (31772)
- reverter (31772)
- undelete (31772)

Last errors/warnings:
- E: java.lang.OutOfMemoryError: Java heap space
- E: java.lang.NullPointerException

java.lang.NullPointerException
	at javax.swing.plaf.basic.BasicTextUI.damageRange(Unknown Source)
	at javax.swing.plaf.basic.BasicTextUI.damageRange(Unknown Source)
	at javax.swing.text.DefaultHighlighter$SafeDamager.run(Unknown Source)
	at java.awt.event.InvocationEvent.dispatch(Unknown Source)
	at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
	at java.awt.EventQueue.access$400(Unknown Source)
	at java.awt.EventQueue$3.run(Unknown Source)
	at java.awt.EventQueue$3.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
	at java.awt.EventQueue.dispatchEvent(Unknown Source)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.awt.WaitDispatchSupport$2.run(Unknown Source)
	at java.awt.WaitDispatchSupport$4.run(Unknown Source)
	at java.awt.WaitDispatchSupport$4.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.awt.WaitDispatchSupport.enter(Unknown Source)
	at java.awt.Dialog.show(Unknown Source)
	at java.awt.Component.show(Unknown Source)
	at java.awt.Component.setVisible(Unknown Source)
	at java.awt.Window.setVisible(Unknown Source)
	at java.awt.Dialog.setVisible(Unknown Source)
	at org.openstreetmap.josm.gui.ExtendedDialog.setVisible(ExtendedDialog.java:502)
	at org.openstreetmap.josm.gui.dialogs.properties.TagEditHelper$AbstractTagsDialog.setVisible(TagEditHelper.java:465)
	at org.openstreetmap.josm.gui.ExtendedDialog.showDialog(ExtendedDialog.java:290)
	at org.openstreetmap.josm.gui.dialogs.properties.TagEditHelper.addTag(TagEditHelper.java:134)
	at org.openstreetmap.josm.gui.dialogs.properties.PropertiesDialog$AddAction.actionPerformed(PropertiesDialog.java:1058)
	at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
	at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
	at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
	at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
	at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
	at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
	at java.awt.Component.processMouseEvent(Unknown Source)
	at javax.swing.JComponent.processMouseEvent(Unknown Source)
	at java.awt.Component.processEvent(Unknown Source)
	at java.awt.Container.processEvent(Unknown Source)
	at java.awt.Component.dispatchEventImpl(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Window.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
	at java.awt.EventQueue.access$400(Unknown Source)
	at java.awt.EventQueue$3.run(Unknown Source)
	at java.awt.EventQueue$3.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
	at java.awt.EventQueue$4.run(Unknown Source)
	at java.awt.EventQueue$4.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
	at java.awt.EventQueue.dispatchEvent(Unknown Source)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.run(Unknown Source)

[wiktorn]

I see OutOfMemoryException in your log. Could it be, that the error was caused by JOSM running out of memory?

Also, I do note that you're running on quite old Java 8 version (_05). Can you please update to 1.8.0_65?

[Vort_]

This can't be regular out of memory, because: JOSM was launched with -Xmx=2048m setting; that time I was only interacting with properties-related UI.
I will update Java, but, sadly, this bug was happened only once to me.

[wiktorn]

For now I close this as irreproducible. If you happen to get it again, with updated Java environment, please reopen this ticket.