Using JSpinner to get values

Question

I am using JSpinner for selecting time in HH:MM:SS format. Whenever i open the GUI the spinner sets automatically to current system time, What I need is say for example if I click save after giving some value to spinner and when I again open it the old values should be shown.

I have tried following code but its not working,

if(Stime != null){
            Date time = new SimpleDateFormat("HHMMSS", Locale.ENGLISH).parse(Stime);
            StarttimeSpinner.setValue(time);
}

where Stime is the previously saved time in HHMMSS format e.g(142030)

is it correct? or how can i do it? Please help!

EDIT:

    SpinnerModel Startmodel = new SpinnerDateModel();
    StarttimeSpinner = new JSpinner();
    StarttimeSpinner = new JSpinner(Startmodel);
    JComponent editor = new JSpinner.DateEditor(StarttimeSpinner, "HH:mm:ss");
    StarttimeSpinner.setEditor(editor);

   try{ 
        if(!(Stime.equalsIgnoreCase("")))
            {
            Date time = new SimpleDateFormat("HH:mm:ss", Locale.ENGLISH).parse(Stime);
            SimpleDateFormat formatter = new SimpleDateFormat("HH:mm:ss");  
            String dateString = formatter.format(time);
            StarttimeSpinner.setModel(new SpinnerListModel(new String[]{dateString}));

        }
    }
    }catch(Exception ie){
        System.err.println("in time panel");
    }

Stime format is HHmmss and its a string.In dateString(Variable) i get the previous value in HH:mm:ss format but its not being set in Spinner instead showing the system time.

EDIT 2: I have Found out a solution but with a bug,

If my code is like this(1),

 StarttimeSpinner = new JSpinner();
             SpinnerModel Startmodel = new SpinnerDateModel();
            StarttimeSpinner = new JSpinner(Startmodel);
            JComponent editor = new JSpinner.DateEditor(StarttimeSpinner, "HH:mm:ss");
            StarttimeSpinner.setEditor(editor);

The below piece of code works fine,

Date starttime = new Date();
starttime = (Date)StarttimeSpinner.getValue();

if i change the code like below(2),

Date time = new SimpleDateFormat("HHmmss", Locale.ENGLISH).parse(Stime);
        SimpleDateFormat formatter = new SimpleDateFormat("HH:mm:ss");  
        String dateString = formatter.format(time);
        StarttimeSpinner.setModel(new SpinnerListModel(new String[]{dateString}));

where Stime is (e.g)120011

The below piece of code doesn't work fine,

Date starttime = new Date();
starttime = (Date)StarttimeSpinner.getValue();

and throwing Exception as java.lang.ClassCastException: java.lang.String cannot be cast to java.util.Date at get value statement.

Answer 1

I'm not exactly 100% sure what you're trying to acheive, but take a look at the example below, maybe it will help you out. I use a button to set the date, then another button that pops up a JOptionPane that shows the previous date saved from the first button click.

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.text.SimpleDateFormat;
import java.util.Date;

import javax.swing.*;

public class TimeSpinner {

    Date date;
    JButton setDate = new JButton("Set Date");
    JButton showSpinner = new JButton("Show Spinner");
    JTextField jtfDate = new JTextField(15);
    JSpinner spinner = new JSpinner();
    JPanel panel;

    public TimeSpinner() {
        jtfDate.setEditable(false);

        panel = new JPanel(new BorderLayout());
        panel.add(setDate, BorderLayout.CENTER);
        panel.add(jtfDate, BorderLayout.NORTH);
        panel.add(showSpinner, BorderLayout.SOUTH);

        setDate.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e) {
                date = new Date();
                jtfDate.setText(date.toString());
            }
        });
        showSpinner.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e) {
                if (date != null) {
                SimpleDateFormat formatter = new SimpleDateFormat("MM/dd/yyyy");
                String dateString = formatter.format(date);
                spinner.setModel(new SpinnerListModel(new String[]{dateString}));
                JOptionPane.showConfirmDialog(null, spinner, "Spinner:"
                        ,JOptionPane.OK_CANCEL_OPTION, JOptionPane.PLAIN_MESSAGE);
                }
            }
        });

        JFrame frame = new JFrame("Date Spinner Demo");
        frame.add(panel);
        frame.pack();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);

    }


    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable(){
            public void run(){
                new TimeSpinner();
            }
        });
    }
}

With the following code, I was able to achieve this using the a the SpinnerModel

SimpleDateFormat formatter = new SimpleDateFormat("MM/dd/yyyy");
String dateString = formatter.format(date);
spinner.setModel(new SpinnerListModel(new String[]{dateString}));

---

EDIT

For different formatting, just change the format. If you want in time

• For hours in 24 hour mode "HH:mm:ss"
• For 12 hour mode "hh:mm:ss a"