Validation of a form in a NetBeans Platform application. First some
pics:
How to do it?
Wrap the "ide/modules/ext/ValidationAPI.jar", i.e., from your
NetBeans IDE installation, into your application.
Extend the palette by right-clicking it, choosing Palette
Manager, then "Add from JAR", then browsing to the above API and
selecting the "ValidationPanel". Drag it from the palette and drop
it on your TopComponent, where it will be named "validationPanel1"
by default.
Then add this...