Just a sample of Jython script to use swing

jython_test.py

#!/usr/bin/env jython
#-*- encoding:utf-8 -*-

from java.lang import System
from javax.swing import JFrame, JButton, JLabel
from java.awt import BorderLayout

# Exit application
def exitApp(event):
    System.exit(0)

# Use a tuple for size
frame = JFrame(size=(300,100))
# Use a tuple for RGB color values.
frame.background = 127,255,127

button = JButton(label='Push to Exit', actionPerformed=exitApp)
label = JLabel(text="A Pythonic Swing Application", horizontalAlignment=JLabel.CENTER)
frame.contentPane.add(label, BorderLayout.CENTER)
frame.contentPane.add(button, BorderLayout.SOUTH)

frame.setVisible(1)