import java.awt.*;
import java.awt.event.*;

public class MessageBox extends Dialog implements ActionListener
{
   private String result;
   private Button OKButton;

   public MessageBox(Frame frame, String title, String messageString)
   {
      // call dialog's constructor
      super(frame, title, true);

      // determine the size of the message box
      Rectangle bounds = frame.getBounds();
      setBackground(Color.white);
      setLocation(bounds.x+bounds.width/3, bounds.y+bounds.height/3);

     // create a panel to hold the message
      Panel messagePane = new Panel();
      Label message = new Label(messageString);
      messagePane.add(message);
      add(messagePane, BorderLayout.CENTER);

      // create a panel to hold the button
      Panel buttonPane = new Panel();
      OKButton = new Button("  OK  ");
      buttonPane.add(OKButton);
      add(buttonPane, BorderLayout.SOUTH);

      // add the Action Listener to the button
      OKButton.addActionListener(this);

      // reorganize internal components to fit window
      pack();
   }

   public void actionPerformed(ActionEvent e)
   {
      setVisible(false);
   }

} // end class MessageBox

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