import java
from javax.swing import JFrame

class MyWindow(JFrame):
     def __init__(self):
         JFrame.__init__(self, 'Swing Demo', windowClosing=self.exit)
         self.setBounds(200, 200, 200, 200)

     def exit(self, event=None):
         java.lang.System.exit(0)

if __name__ == "__main__":
    MyWindow().setVisible(True)