JSpinner Value change Events

Question

How to make the update immediately when the jSpinner value was changed.

ChangeListener listener = new ChangeListener() {
  public void stateChanged(ChangeEvent e) {
    jLabel.setText(e.getSource());
  }
};

spinner1.addChangeListener(listener);

The code above doesnt change the label text automatically, it required you to click again anyplace to update.

Answer 1

The code you show appears correct. For reference, here is a working example.

import java.awt.EventQueue;
import java.awt.GridLayout;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JSpinner;
import javax.swing.SpinnerDateModel;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;


/** @see http://stackoverflow.com/questions/3949382 */
public class JSpinnerTest extends JPanel {

    public static void main(String args[]) {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                JFrame f = new JFrame("JSpinnerTest");
                f.add(new JSpinnerTest());
                f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                f.pack();
                f.setVisible(true);
            }
        });
    }

    public JSpinnerTest() {
        super(new GridLayout(0, 1));
        final JLabel label = new JLabel();
        final JSpinner spinner = new JSpinner();
        Calendar calendar = Calendar.getInstance();
        Date initDate = calendar.getTime();
        calendar.add(Calendar.YEAR, -5);
        Date earliestDate = calendar.getTime();
        calendar.add(Calendar.YEAR, 10);
        Date latestDate = calendar.getTime();
        spinner.setModel(new SpinnerDateModel(
            initDate, earliestDate, latestDate, Calendar.MONTH));
        spinner.setEditor(new JSpinner.DateEditor(spinner, "MMM yyyy"));
        spinner.addChangeListener(new ChangeListener() {
            @Override
            public void stateChanged(ChangeEvent e) {
                JSpinner s = (JSpinner) e.getSource();
                label.setText(s.getValue().toString());
            }
        });
        label.setText(initDate.toString());
        this.add(spinner);
        this.add(label);
    }
}