python
from javax.swing import JFrame, JButton, JLabel
from java.awt import FlowLayout
frame = JFrame("Jython GUI Example")
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE)
frame.setLayout(FlowLayout())
label = JLabel("Hello, Jython GUI!")
frame.add(label)
button = JButton("Click me!")
frame.add(button)
frame.pack()
frame.setVisible(True)