/**
 * @author dgreen
 *
 */
import javax.swing.*;

public class JOFeatures {

    static String response;

    public static void main(String[] args) {
        while ( true ) {
            response = JOptionPane.showInputDialog("Enter Data (type 'quit' to end)");
            if ( response == null )
                JOptionPane.showMessageDialog(null, "CANCEL chosen");
            else if ( response.equals( "" ) )
                JOptionPane.showMessageDialog(null, "OK without data");
            else if ( response.equals( "quit" ) )
                System.exit( 0 );
            else
                JOptionPane.showMessageDialog(null, "Got data: " + response );
        }
    }
}