you need only a normal TextField ...
Then you need a SimpleDateFormat-object (java.text.SimpleDateFormat)
create a new object like this
SimpleDateFormat sdf = new SimpleDateFormat("HH:mm");
then you can call the setText-method of the TextField.
like this
textField.setText(sdf.format(new Date()));
Hm ... you need a inputfield for users to type a date?
Thats easy too.
Try this :
JSpinner timeSpinner = new JSpinner(new SpinnerDateModel(new Date(), null, null, Calendar.Hour));
timeSpinner.setEditor(new JSpinner.DateEditor(timeSpinner, "HH:mm' clock'"));
Here you got a JSpinner and it works really good. Try to spin with the different values ...
By the way ... you can edit the SimpleDateFormat-pattern as you like...
Read the api of SimpleDateFormat. So you can easy make your date-style.