id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
15782	Presets loading is very slow with Java 9+ / WebStart	Don-vip	team	"I noticed JOSM is very slow to load in WebStart with Java 9 or 10.
It appears the presets loading takes between 28 and 30 seconds with these versions (tested with 9.0.1 and 10-ea+39) while Java 8 only takes about 3 seconds.

I'm not sure why. probably linked to the fact Java WebStart runs with a security manager.

Maybe linked to [http://openjdk.java.net/jeps/232 JEP 232: Improve Secure Application Performance] ?"	defect	closed	major		Core Webstart		wontfix	performance java9 java10 presets javabug	stoecker