Java JSpinner.getPreviousValue()

public Object getPreviousValue()

import java.awt.Container;
import java.awt.FlowLayout;
import java.util.Calendar;
import java.util.Date;
//from w ww  . j a  va  2  s .co  m
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JSpinner;
import javax.swing.SpinnerDateModel;

public class Main extends JFrame {

  public Main() {
    super("Month Spinner");
    setSize(200, 100);
    setDefaultCloseOperation(EXIT_ON_CLOSE);

    Container c = getContentPane();
    c.setLayout(new FlowLayout(FlowLayout.LEFT, 4, 4));

    c.add(new JLabel("Expiration Date:"));
    Date today = new Date();
    JSpinner s = new JSpinner(new SpinnerDateModel(today, null, null, Calendar.MONTH));
    JSpinner.DateEditor de = new JSpinner.DateEditor(s, "MM/yy");
    s.setEditor(de);
    c.add(s);

    setVisible(true);
    
    System.out.println(s.getPreviousValue());
  }

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