Re: JSpinner and date / time

Hello.
After strugeling through APIs and official tutorials I finally though I understand the thing, but
nooooo... I'm trying to make my spinner spin from 00:00 to 59:59 (mm:ss) with seconds increasing
by 1. Can anybody tell me why stuff below dosen't work? I've run out of patience for testing and
reading over and over. Thank you.

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import java.util.*;
import javax.swing.*;

public class TFrame extends JFrame {
    public TFrame() {
        super("TEST");
        setDefaultCloseOperation(EXIT_ON_CLOSE);

        Calendar calendar = Calendar.getInstance();
        calendar.set(Calendar.SECOND, 0);
        calendar.set(Calendar.MINUTE, 0);
        Date startDate = calendar.getTime();
        calendar.add(Calendar.MINUTE, 60);
        Date maxDate = calendar.getTime();
        JSpinner spinner = new JSpinner(new SpinnerDateModel(startDate,
                                startDate, maxDate, Calendar.SECOND));
        spinner.setEditor(new JSpinner.DateEditor(spinner, "mm:ss"));
        add(spinner);
        setBounds(0,0,200,100);
        setVisible(true);
    }

    public static void main(String[] args) {
        new TFrame();
    }

} // end of class
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...dosen't work, spiner is always at 00:00. :(