Using events (?) to share data between tab pages

I don't know whether this is an event question or an Object-Oriented design question or a JTabbedPane question.
I'm pretty new to Java, so be patient!
I wish to have a JTabbedPane with a tab to do 'Import' of data, and a tab to do 'Export' of data (the SAME data which was imported). Now, how do I share the data between the 2 tabs?
It seems the data belongs at the JFrame level, but then how does the data in each tab access it? In other languages I would pass a reference to the data object in the window to each tab.
Or how do I get (or set) the data when the tab changes? And how do I know when the tab changes?
I think I need to set trigger some sort of event to the parent window, who I suppose has a listener, and then it can then query the appropriate pane? If so, I'm not sure what sort of event trigger I should be using, where etc.
I know if I had one tab with an import/export functionality then I could declare the Collection within that panel.
Help!!!
Thanks ;)

I think this is an OO design question.
You basically have two views (the two panes) of the same data. So I'd suggest the Observer pattern (see the Design Patterns book) where one model holds the data and the model is observed by several views.

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According to your post, my understanding is that you wanted share data between two forms on different lists.
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A Simple Guide to Show More Information on a Calendar Event
I recommend to use workflow to achieve what you want. But you need to create a people column to display the manager.
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Best Regards,
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Linda Li
TechNet Community Support

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Ian wrote:
> I'm trying to share data between LabVIEW v6.0 and another program (16
> bit), both running on Windows95. At first DLL's seemed to be the
> answer but I would need to call 16 bit DLL's which I understand can be
> a problem. With my limited knowledge of C++ I've written a program
> (Borland C++4.2) which can access the data I need and save it to a
> file, this is then repeatedly read by LabVIEW, crude but it works.
> When I add code to do the same the other way I get occasional file
> sharing errors. I can't get either LabVIEW or C++ to trap these
> errors. As an alternative I thought I could write and read to a
> reserved portion of memory (less than 1K should be enough) using in
> port and out port. Is this viable, and if so how do I reserve the
> memory in Windows 95 so that LabVIEW & my C++ program can access it?
>
> Any suggestions?
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Sergey Krasnishov
Automated Control Systems
National Instruments Alliance Member
Moscow, Russia
[email protected]
http://acs.levsha.ru

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=====================================
Block Diagrams (LabVIEW 8)
Message Edited by Klein on 04-03-2007 12:56 PM
Attachments:
TabControl.vi ‏37 KB
TabControl - Page1.jpg ‏94 KB
TabControl - Page2-3.jpg ‏165 KB

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Jeff Meyer
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Suffield, CT USA
"Alf Katz" wrote in message
news:[email protected]..
> Hi guys and gals,
> On the advice of a lv consultant, we've used an array of global
> variables to share data (about 100 variables) between an
acquisition/control
> program and a consumer program (datalogging) running on the same PC. This
> worked fine in the development environment. However it no longer works
when
> the two programs are compiled. Is there a trick to get this to work or do
> we have to use datasockets or DDE to move the data.
>
> In case you're wondering the idea of two separate programs is to
> separate the critical control and data acquisition functions from the less
> critical but more likely to error datalogging functions.
>
>
> --
> Regards,
> Alf Katz,
> [email protected]
org
>
>
>

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Hi,
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Using events (?) to share data between tab pages

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