NetForm Web Application Framework for Java is to be easy, rapid, productive and maintainable way to create complex HTML application forms and applications.
Java Web Application Framework (JWAF) is a framework designed to extend existing per-tier frameworks such as Struts and Castor, to provide a complete framework for rapidly building business process applications.
Also consider SF project ValueObjects.
Anokha is a MVC web framework based on Java/J2EE technology that simplify the enterprise application development by providing a set of presentation and business tier components being J2EE-API independent and high extensible. Easy
to use and learn.
DataBase to Java Web Application.
This java application automatically generates a java web application framework from an existing database. The original codebase comes from the excellent work of Herve Tchepannou\'s xPetstore.
WIN-Servlet is a web application framework that supports a windows-like program structure. A browser has its own session-context and window-stack. Supports: component-based dialogs (FORM), input validation, standard HTML/JavaScript pages, servlet API 2.2
Marko is a lightweight, action-based web framework for Java with support for multiple templating engines (Freemarker, Velocity, etc). Configuration is done in code (no XML).
Spider is a Java framework for creating web applications. Its major design goals are are testing, reducing boilerplate code, avoiding static state through dependency injection, strict M-V-C separation and convention over configuration.