Debugging tips

Use "detail formatters"

Make it easier to identify which way/node/etc. a object corresponds to

Testing changes without restarting JOSM

Just in case I'm not the only eclipse noo :)

Eclipse support "live code editing" while debugging, meaning that you can make changes to the code, and they will be compiled and "inserted" into the application being debugged. Somewhat surprisingly (too me at least) this works more or less for plugins too. At least if the plugin and JOSM project are open in the same eclipse workspace, and the plugin has JOSM as a required project.