Java Swing Message Box in a Struts action

I found the listed program on Roseindia.net.  Great site I recommend it.  Here is the code:

import javax.swing.*;
import java.awt.event.*;

public class ShowDialogBox{
  JFrame frame;
  public static void main(String[] args){
    ShowDialogBox db = new ShowDialogBox();
  }

  public ShowDialogBox(){
    frame = new JFrame("Show Message Dialog");
    JButton button = new JButton("Click Me");
    button.addActionListener(new MyAction());
    frame.add(button);
    frame.setSize(400, 400);
    frame.setVisible(true);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  }

  public class MyAction implements ActionListener{
    public void actionPerformed(ActionEvent e){
      JOptionPane.showMessageDialog(frame,"Roseindia.net");
    }
  }
}

I want to display the JOptionPane running it from a Struts Action class.  Is this possible sinceI'm afraid I must run in a JFrame or something like that?  I want to display informational messages and warnings using is.  Any ideas?

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