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The moose likes Swing / AWT / SWT and the fly likes Multiple listeners Big Moose Saloon
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Multiple listeners

Anindita De

Joined: Nov 05, 2009
Posts: 3
I have an e-commerce application interface, where I have checkboxes for each item, a "Add selected to Cart" button and in addition, an "Add to Cart" button for each item.

I would have to implement a number of listeners in order to add items to the cart. Can anyone give me ideas about how to get started with this?

Also, everytime I need to add an item to the cart, I want to make a separate JPanel for that item within an outer JPanel. Therefore, I am to add this sub JPanel for display everytime the user chooses to add an item.

Any help would be appreciated!

Paul Clapham

Joined: Oct 14, 2005
Posts: 19973

To implement a number of listeners, you would simply implement them one at a time. So, is your question how to use listeners, or is it something else?

Also, the idea of adding new components to a panel all the time is a difficult one to implement. In my opinion it would be better to have a single component (like for example a JTable) and to modify that component each time the user chooses another item.
I agree. Here's the link:
subject: Multiple listeners
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