Separated GUI, ActionListener and other Listener like a DocumentListener

Question

Hi there
Has someone of you an idea how to get the text from JTextbox when the Action is handeld in a separated "Action class"?
I tried it already with a TextListener and a DocumentListener but without success.
I use the following model all in the same package:
Class 1:
public static void main(String[] args)
     Commands commands = new Commands();
     UserInterface gui = new UserInterface(commands);
Class 2:
public class UserInterface
extends JFrame
JTextField textfield = new JTextField();
Class 3:
public class Commands
extends JFrame
implements ActionListener
public void actionPerformed(ActionEvent event)
Thank you all for your attention and answers.
Philipp

Answer 1

I think if you make th class2 like
Class 2:
public class UserInterface
extends JFrame
public JTextField textfield = new JTextField();// Imeen as a member in the class
and in the class 3
public class Commands
extends JFrame
implements ActionListener
UserInterface u = new UserInterface();
u.textfield.addActionListener();
public void actionPerformed(ActionEvent event)
I think it will work.