GET VALUE FROM SWING GUI

Hi. I can't get value from swing simple gui to the rest script
I think it must be in a different thread but I can't find any working example
Can you show me a working example??
*im running throw command line the script

My simple code is this:

from javax.swing import (JButton, JFrame, JPanel, JCheckBox, JLabel, BoxLayout,WindowConstants)
from java.awt import BorderLayout
myval = 0
#---------------------------------------------------------------
class Mytest():
 def tally(event):
  global myval
  if checkbox1.isSelected():
   myval = 2
  else:
   myval = 3
  frame.visible = False
#---------------------------------------------------------------
 frame = JFrame('Test!', defaultCloseOperation = JFrame.EXIT_ON_CLOSE,size = (300, 300))
 selectionPanel = JPanel()
 selectionPanel.layout=BoxLayout(selectionPanel, BoxLayout.Y_AXIS)
 frame.add(selectionPanel)
#---------------------------------------------------------------
 text = JLabel('---------------------------------------------')
 selectionPanel.add(text)
 text = JLabel('hello there')
 selectionPanel.add(text)
 checkbox1 = JCheckBox('2', selected = False)
 selectionPanel.add(checkbox1)
 checkbox2 = JCheckBox('3', selected = False)
 selectionPanel.add(checkbox2)
#---------------------------------------------------------------
 buttonPanel = JPanel()
 frame.add(buttonPanel, BorderLayout.SOUTH)
 button = JButton('ok', actionPerformed = tally)
 buttonPanel.add(button)
 frame.visible = True
print myval