JavaFX11 incompatible fxconnector version in jar from scenicview-linux.zip

[wirew0rm]

I'm trying to run the jar from the package linked in the README.md using javafx-sdk-12.0.1 and openjdk 11.0.4 2019-07-16 LTS but it is stuck on the "scanning for javaFX applications" screen and spamming NoSuchMethodError Exceptions in the background. It seems like this is allready fixed in 59264de:

https://github.com/JonathanGiles/scenic-view/blob/master/src/main/java/org/fxconnector/remote/RuntimeAttach.java#L138

It seems like the wrong org.fxconnector component was bundled into the release jar.

This is the error message I get when running scenic-view:

# /usr/lib/jvm/java/bin/java --module-path javafx-sdk-12.0.1/lib/ --add-modules javafx.web,javafx.fxml,javafx.swing -jar scenicview/lib/scenicview.jar
[...]
java.rmi.ServerError: Error occurred in server thread; nested exception is: 
	java.lang.NoSuchMethodError: 'java.util.Iterator javafx.stage.Window.impl_getWindows()'
	at java.rmi/sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:388)
	at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:200)
	at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:197)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.rmi/sun.rmi.transport.Transport.serviceCall(Transport.java:196)
	at java.rmi/sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:562)
	at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:796)
	at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:677)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:676)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:834)
	at java.rmi/sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:283)
	at java.rmi/sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:260)
	at java.rmi/sun.rmi.server.UnicastRef.invoke(UnicastRef.java:161)
	at java.rmi/java.rmi.server.RemoteObjectInvocationHandler.invokeRemoteMethod(RemoteObjectInvocationHandler.java:209)
	at java.rmi/java.rmi.server.RemoteObjectInvocationHandler.invoke(RemoteObjectInvocationHandler.java:161)
	at org.fxconnector.remote.$Proxy6.getStageIDs(Unknown Source)
	at org.fxconnector.remote.RemoteConnectorImpl.lambda$onAgentStarted$1(RemoteConnectorImpl.java:103)
	at org.fxconnector.remote.RMIUtils$2.run(RMIUtils.java:113)
Caused by: java.lang.NoSuchMethodError: 'java.util.Iterator javafx.stage.Window.impl_getWindows()'
	at org.fxconnector.remote.RuntimeAttach$1.getStageIDs(RuntimeAttach.java:138)
	at org.fxconnector.remote.RemoteApplicationImpl.getStageIDs(RemoteApplicationImpl.java:108)
	at jdk.internal.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at java.rmi/sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:359)
	at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:200)
	at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:197)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.rmi/sun.rmi.transport.Transport.serviceCall(Transport.java:196)
	at java.rmi/sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:562)
	at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:796)
	at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:677)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:676)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:834)

[danielfriederich]

I did run into the same issue. But it turns out my issue was actually due to my javafx app not having the javafx.swing module
Once I did add that, the official linux scenicView started to show the tree.
More concretely (and specific to my debug setup), I did append ,javafx.swing in the --add-modules launch option

--add-modules javafx.base,javafx.controls,javafx.fxml,javafx.graphics,javafx.web,javafx.swing