BrowserSim will not start with Oracle JDK 9 EA

nattura:8.0.2 rasp$ java -version
java version "1.9.0-ea"
Java(TM) SE Runtime Environment (build 1.9.0-ea-b45)
Java HotSpot(TM) 64-Bit Server VM (build 1.9.0-ea-b45, mixed mode)

javafx/embed/swt/FXCanvas
Stack trace:
java.lang.NoClassDefFoundError: javafx/embed/swt/FXCanvas
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:759)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
	at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:262)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
	at org.jboss.tools.vpe.browsersim.browser.WebKitBrowserFactory.createBrowser(WebKitBrowserFactory.java:28)
	at org.jboss.tools.vpe.browsersim.ui.skin.ResizableSkin.createControls(ResizableSkin.java:92)
	at org.jboss.tools.vpe.browsersim.ui.BrowserSim.initSkin(BrowserSim.java:183)
	at org.jboss.tools.vpe.browsersim.ui.BrowserSim.open(BrowserSim.java:162)
	at org.jboss.tools.vpe.browsersim.ui.BrowserSim.open(BrowserSim.java:137)
	at org.jboss.tools.vpe.browsersim.BrowserSimRunner.main(BrowserSimRunner.java:105)
Caused by: java.lang.ClassNotFoundException: javafx.embed.swt.FXCanvas
	at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:262)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
	... 18 more