Update a Running JavaEE Application
Next Maia EAP build includes new action that lets you quickly update a running JavaEE application after you changed its code. To invoke it, either press Ctrl+F10, or click this button on the Run tool window bar:
IntelliJ IDEA will allow you to select what to update in application:
Settings are saved in a current Run Configuration, so you can change them later even if you select Don’t ask again option.