For older, around java 7 u20 etc google maps in javafx webview worked great. Ever since it's unfortunately been plagued by various problems. In the latest java 7 updates it works for a fairly long time if you scroll and pan around carefully for a while.

In all java 8 builds I've trired it fails quickly and miserably (see other bugs).

Having seen some of the bugs been resolved I tried out the latest java 9 b53. It worked for a little bit longer, maybe even 1-2min before crashing. Always reproducible.

# JRE version: Java(TM) SE Runtime Environment (9.0-b53) (build 1.9.0-ea-b53)
# Java VM: Java HotSpot(TM) Client VM (1.9.0-ea-b53 mixed mode windows-x86 )
# Problematic frame:
# C [jfxwebkit.dll+0x7e57ff]