Add file filters to JavaFx Filechooser in Jython and parametrize them

I created a javaFX chooser file in Jython. It wasn't easy to port from Java to Jython, but in the end some results came. Now I would like to parameterize the obtained class, taking into account the file filters, so as to be able to use the object for browsing different from the type of filtered files.
I tried to insert a fixed filter:

import sys

from javafx.application import Application
from javafx.stage import FileChooser, Stage

class fileBrowser(Application):

    @classmethod
    def main(cls, args):
        fileBrowser.launch(cls, args)

    def start(self, primaryStage):
        fc = FileChooser()
        filter = FileChooser.ExtensionFilter("All Images", '*.jpg')
        fc.getExtensionFilters().add(
            filter
        )

        f = fc.showOpenDialog(primaryStage)

if __name__ == '__main__':
    fileBrowser.main(sys.argv)

But I have the following error:

Exception in Application start method
Traceback (most recent call last):
  File "provaFileChooser.py", line 28, in <module>
    fileBrowser.main(sys.argv)
  File "provaFileChooser.py", line 15, in main
    fileBrowser.launch(cls, args)
        at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917)
        at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$1(LauncherImpl.java:182)
        at java.lang.Thread.run(Unknown Source)
Caused by: Traceback (most recent call last):
  File "provaFileChooser.py", line 19, in start
    filter = FileChooser.ExtensionFilter("JPG Images", '*.jpg')
TypeError: javafx.stage.FileChooser$ExtensionFilter(): 2nd arg can't be coerced to java.util.List, String[]

        at org.python.core.Py.TypeError(Py.java:236)
        at org.python.core.PyReflectedFunction.throwError(PyReflectedFunction.java:213)
        at org.python.core.PyReflectedFunction.throwBadArgError(PyReflectedFunction.java:316)
        at org.python.core.PyReflectedFunction.throwError(PyReflectedFunction.java:325)
java.lang.RuntimeException: java.lang.RuntimeException: Exception in Application start method

I also tried to cast the filter into a list and to insert the filter into a list but the error persists.

What am I doing wrong, and what should I do?
Thanks in advance.

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