From Forum Nokia Wiki

The following code creates a Form with a Date Field.

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
 
public class Date_Field extends MIDlet 
{
     Display display=Display.getDisplay(this);
 
    public void startApp() 
    {
       Form form = new Form("Form example");
//     DateField(label,type);
       DateField datefield = new DateField("Date Field Example",
                                                    DateField.DATE_TIME);
       form.append(datefield);
       display.setCurrent(form);       
    }
}

The following screenshot is an outcome.