Using ActionListener to determine value in JComboBox

Thread view:

Ben - 13 Feb 2006 19:45 GMT

Hi, can anyone help with this?

At the moment I have a class that implements ActionListener and
overides the method actionPerformed (ActionEvent e).
I have a number of JButtons that have the custom listener
added to them using addActionListener(customListener). In order to
find out which button was pressed I attach an action command to them
using setActionCommand("text"). I then use getActionCommand() in the
custom listener class to find out which button was pressed. This works
great for buttons. But I have a JComboBox that contains a number of
values. How can I do a similar thing and find out what value was
selected in the combobox from the listener?

Thanks in advance for any help.

Ben.

Reply to this Message

Ben - 13 Feb 2006 20:34 GMT

Don't worry I got it I used getSource and cast it to a JComboBox.

Reply to this Message

Ben - 13 Feb 2006 20:46 GMT

Actually thinking again is there any way to use ActionEvent.getSouce()
and distinguish if a JButton or JComboBox were used and then which
button and what value in combobox without using setActionCommand?

Thanks.

Ben.

Reply to this Message

Monique Y. Mudama - 13 Feb 2006 20:56 GMT

> Actually thinking again is there any way to use
> ActionEvent.getSouce() and distinguish if a JButton or JComboBox
> were used and then which button and what value in combobox without
> using setActionCommand?

It sounds like you're looking for the instanceof operator.

Signature

monique

Ask smart questions, get good answers:
http://www.catb.org/~esr/faqs/smart-questions.html

Reply to this Message

Roedy Green - 13 Feb 2006 22:04 GMT

On Mon, 13 Feb 2006 13:56:40 -0700, "Monique Y. Mudama"
<spam@bounceswoosh.org> wrote, quoted or indirectly quoted someone who
said :

>It sounds like you're looking for the instanceof operator.

see http://mindprod.com/jgloss/instanceof.html

Signature

Canadian Mind Products, Roedy Green.
http://mindprod.com Java custom programming, consulting and coaching.

Reply to this Message

Vova Reznik - 13 Feb 2006 21:41 GMT

> Actually thinking again is there any way to use ActionEvent.getSouce()
> and distinguish if a JButton or JComboBox were used and then which
[quoted text clipped - 3 lines]
>
> Ben.

Yes, source instanceof JComboBox for example.

But, what if you will have more than one JComboBox?

If you started mark your buttons by setActionCommand(String)
you may continue it with JComboBox too.
Or you may set to any Component name as identifier

Reply to this Message

Using ActionListener to determine value in JComboBox

Free Magazines