Upon opening JOSM encountered error message

[cropper_1@…]

What steps will reproduce the problem?

1. Simply opening JOSM, I did however have another java application I'm developing running in the background

What is the expected result?
For the JOSM to load normally, with the progress bar

What happens instead?
The error message below was presented to me

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

Repository Root: http://josm.openstreetmap.de/svn
Build-Date: 2011-04-14 01:31:50
Last Changed Author: bastiK
Revision: 4021
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
URL: http://josm.openstreetmap.de/svn/trunk
Last Changed Date: 2011-04-13 22:43:46 +0200 (Wed, 13 Apr 2011)
Last Changed Rev: 4021

Identification: JOSM/1.5 (4021 en_GB)
Memory Usage: 30 MB / 494 MB (10 MB allocated, but free)
Java version: 1.6.0_24, Sun Microsystems Inc., Java HotSpot(TM) Client VM
Operating system: Windows 7

Plugin: openstreetbugs (25664)
Plugin: turnrestrictions (25845)

java.lang.IndexOutOfBoundsException: Index: 3, Size: 3
	at java.util.ArrayList.RangeCheck(Unknown Source)
	at java.util.ArrayList.get(Unknown Source)
	at java.awt.Container.createHierarchyEvents(Unknown Source)
	at java.awt.Container.createHierarchyEvents(Unknown Source)
	at java.awt.Container.createHierarchyEvents(Unknown Source)
	at java.awt.Container.createHierarchyEvents(Unknown Source)
	at java.awt.Container.createHierarchyEvents(Unknown Source)
	at java.awt.Container.createHierarchyEvents(Unknown Source)
	at java.awt.Component.hide(Unknown Source)
	at java.awt.Window.hide(Unknown Source)
	at java.awt.Component.show(Unknown Source)
	at java.awt.Component.setVisible(Unknown Source)
	at java.awt.Window.setVisible(Unknown Source)
	at org.openstreetmap.josm.gui.MainApplication.main(MainApplication.java:228

[bastiK]

Looks more like a Java bug of some kind, can you reproduce?

[anonymous]

Well all I can really say in terms of reproducing this issue, I was developing a Java program at the time and was in the debug stages

[stoecker]

Ticket #6289 has been marked as a duplicate of this ticket.

[stoecker]

Maybe somehow caused by the changes in the program icon? Probably the Java function for multiple icons is buggy?

[cropper_1@…]

Possibly, I mean the program I'm devloping does involve icon's as well

[jttt]

Exceptions like this sometimes happen when gui is accessed from non EDT thread. Check ​http://weblogs.java.net/blog/alexfromsun/archive/2006/02/debugging_swing.html for ways to detect EDT rules violations (ThreadCheckingRepaintManager is imho sufficient).

In this case, most of code in MainApplication.main should be executed inside of EventQueue.invokeLater(), not directly in main thread.

[stoecker]

Ticket #5882 has been marked as a duplicate of this ticket.

[skyper]

Ticket #6931 has been marked as a duplicate of this ticket.

[kolen]

Occured today when using reverter plugin, after downloading objects needed to revert.

Stacktrace: ​https://gist.github.com/1325761

[Don-vip]

Ticket #7112 has been marked as a duplicate of this ticket.

[Don-vip]

Ticket #5040 has been marked as a duplicate of this ticket.

[simon04]

Replying to kolen:

Occured today when using reverter plugin, after downloading objects needed to revert.

Stacktrace: ​https://gist.github.com/1325761

Fixed in r4761.

I'm not sure whether (different) stacktraces from #6284=#7112 are still relevant.