DomUI is an easy to use component-based framework to create AJAX rich web based user interfaces using only Java as the language and open sourced using the LGPL 2.1. It has a lot of predefined components, and allows you to easily define your own- usually without writing any Javascript. In addition it is an application framework which encapsulates many best practices, makes you DRY (Don't Repeat Yourself), and saves a developer's time by making simple things simple (while allowing for complex things).
When should I use DomUI?
Use DomUI to create large web-based applications where there are lots of input and data screens. Using the (optional) metadata layer you can very quickly create all kinds of CRUD screens. The rich, generic and extensible metadata layer helps you by retrieving information in your (data) model classes, database etc. so that you do not have to define the same thing over and over again. One definition of "This string field is 30 characters long", for instance as a JPA/Hibernate annotation on a property, is all it takes to have all edit components reuse that value automatically. The stateful page handling makes handling data easy, and prevents serialization headaches. And data binding between business models and UI components allows for separation of business logic and UI without lots of work.
When should I not use DomUI?
DomUI can be used for most