how to use a button to use selectRegion in java

 i want to use sikuli with java

now i want create a button and the button can use the sikulix the region selectRegion fuction. but i add the method to the button

it not work and when my program done the selectRegion will done

this is my code
     button.addActionListener(new ActionListener(){
      public void actionPerformed(ActionEvent e) {
      System.out.println("Select");
      Region ac = s.selectRegion();
  System.out.println(ac);
      }
});
then wait (5~10s) will appear the selectRegino but is wait to long