File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
The moose likes Swing / AWT / SWT and the fly likes Reloading Panels in a CardLayout. Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login
JavaRanch » Java Forums » Java » Swing / AWT / SWT
Bookmark "Reloading Panels in a CardLayout." Watch "Reloading Panels in a CardLayout." New topic

Reloading Panels in a CardLayout.

Somnath Mallick
Ranch Hand

Joined: Mar 04, 2009
Posts: 482
Hello Everyone,

Its been years since I have done something with swing/awt. Just wanted to know, that in a card layout, how do you refresh one of the panels depending upon the changes of another panel.

My scenario is:
I have 3 panels in a card layout, when first loading the UI, the first panel has two radio buttons and one of them in disabled. Now on the second panel, if the user makes some changes, the radio button should be enabled when the user visits the first panel again. Right now, I am not able to achieve this. I googled a lot but did not find answers to this.
Paul Clapham

Joined: Oct 14, 2005
Posts: 19973

You use a reference to the radio button on the first panel, and you call its setEnabled(true) method when the user makes those changes in the second panel.

Really, it's as simple as that. However it seems like you haven't written your controller code so that it has a reference to that radio button. You should fix that problem. The controller code which is called when the second panel's action listener is called (or whatever it is which reacts to those changes) should also have a variable which refers to that radio button.
Somnath Mallick
Ranch Hand

Joined: Mar 04, 2009
Posts: 482
OK... Maybe for this one, i was doing way too much thinking!
I agree. Here's the link:
subject: Reloading Panels in a CardLayout.
It's not a secret anymore!