Editing the jSpinner time picker model

Problem 1: The user can edit the minutes of the hour and the second separator ":" and can write additional digits like "123"

getTextField():

JSpinner.DateEditor editor = new JSpinner.DateEditor(spinner, "HH:mm:ss");
DateFormatter formatter = (DateFormatter)editor.getTextField().getFormatter();
formatter.setAllowsInvalid(false); // this makes what you want
formatter.setOverwriteMode(true);

JFormattedTextField DateFormatter . , .

, . "HH: mm: ss" - .

2: . "00:00:00"

12 (24 ), "00:00:00":

Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.HOUR_OF_DAY, 24);
calendar.set(Calendar.MINUTE, 0);
calendar.set(Calendar.SECOND, 0);

SpinnerDateModel model = new SpinnerDateModel();
model.setValue(calendar.getTime());

JSpinner spinner = new JSpinner(model);

, , . , .

import java.util.Calendar;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JSpinner;
import javax.swing.SpinnerDateModel;
import javax.swing.SwingUtilities;
import javax.swing.text.DateFormatter;

public class Demo {

    private void createAndShowGUI() {

        Calendar calendar = Calendar.getInstance();
        calendar.set(Calendar.HOUR_OF_DAY, 24); // 24 == 12 PM == 00:00:00
        calendar.set(Calendar.MINUTE, 0);
        calendar.set(Calendar.SECOND, 0);

        SpinnerDateModel model = new SpinnerDateModel();
        model.setValue(calendar.getTime());

        JSpinner spinner = new JSpinner(model);

        JSpinner.DateEditor editor = new JSpinner.DateEditor(spinner, "HH:mm:ss");
        DateFormatter formatter = (DateFormatter)editor.getTextField().getFormatter();
        formatter.setAllowsInvalid(false); // this makes what you want
        formatter.setOverwriteMode(true);

        spinner.setEditor(editor);

        JPanel content = new JPanel();
        content.add(spinner);

        JFrame frame = new JFrame("Demo");
        frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
        frame.getContentPane().add(content);
        frame.pack();
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {                
                new Demo().createAndShowGUI();
            }
        });
    }    
}

( ), , . 12, 21.

, , . , false - JSpinner.DateEditor ( ). true javadoc. , ( ):

formatter.setOverwriteMode(true);