Re: Add multiple data items inside JList

Lew <lew@lewscanon.nospam>
Sun, 15 Jul 2007 20:07:15 -0400
Roedy Green wrote:

I would do it like this.
1. extract the ListModel with getModel.
2. Build a vector of the existing options
3. add to that Vector.
4. sort the Vector
5. Replace the datamodel with your ENTIRE Vector of choices. Don't
keep replaceing the ListModel. Wait till you have it complete.

I assume that you recommend Vector because its methods are synchronized on the
Vector instance, but I'm not sure that is all that helpful.

If I follow your model correctly, you're doing steps 2 through 4 to build the
expanded List (which Vector implements) within a single thread, so
synchronization is only an issue for steps 1 and 5, yes? Maybe we need one of
the standard tricks to make the model extraction and substitution happen on
the EDT, but the construction of the new List not to?

I also wonder if a synchronized ArrayList, or a concurrent List, might serve
better than a Vector.

I am not yet confident about multi-threading issues, less so even about Swing
matters, so by all means educate me.


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