JSPINNER - ABOUT TIME!

[Alex Ioannou]

Hi all
Just thought that I would introduce you all to JSpinner, a new feature in J2SDK 1.4.
JSpinner provides the arrow interface to increment a value in a textfield. An example of this is in your windows date/time settings, you'll see that you can adjust the year by moving the little arrows to the right of the textbox.
I'm surprised that earlier versions of the J2SDK did not implement this, but at least they have now.
Well here is a bit of sample code, enjoy.
Al

// variables with "value" suffix are ints, could not be
// bothered to declare them.
SpinnerNumberModel dayModel = new SpinnerNumberModel(current_value, min_value, max_value, step_value); 
JSpinner jDays              = new JSpinner(dayModel);
JtextField displayDays      = new JTextField(2);
displayDays.setFocusable(false);
jDays.setEditor(displayDays);

jDays.addChangeListener(new ChangeListener()
{  public void stateChanged(ChangeEvent e)
   {  displayDays.setText(((Integer)jDays.getValue()).toString());
   }
});
   
jDays.setFocusable(false);

[Gregg Bolinger]

Actually, you could implement this on earlier versions. Make a thin JTextArea with a Vertical Scroll Pane and append all your values to the list before drawing it.
There is always a work around. Don't ever become dependent on API's.
Just my two cents.

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Happy Coding,
Gregg Bolinger

[Michael Szul]

I, personally, was more thrilled with the addition of regular expressions.