VRaptor 2 is a Web-based MVC and IOC framework based on many frameworks and ideas (Seam, Stripes, Webwork, Hibernate Annotations, etc). It makes full use of Java 5 Annotations. It favors convention over configuration, because configuration in XML/properties/annotations is always easy to make mistakes and repetitive (aka copy and paste in many places). This framework uses a more imperative approach, instead of having many XML files to configure lifecycle and other properties. Most of the settings go inside plain Java objects (POJO), so the team knows exactly what is going on and where.
Aranea is a hierarchical Model-View-Controller Web framework that provides a common, simple approach to building Web application components, reusing custom or general GUI logic, and extending the framework. The framework enforces programming using object oriented techniques with POJOs and provides a JSP tag library that facilitates the programming of Web GUIs without writing HTML. In addition to being a full-fledged Web framework in its own right, it provides a powerful and simple component system that allows the framework to be tailored by configuring the reusable modules and adding modules only for the missing features.
Mr. Persister aims at providing a simple yet complete relational persistence API. Current features include easier JDBC operations via JDBC templates (Spring style), automatic connection/transaction handling, object relational mapping, dynamic report support, connection pooling, and more. Planned features include replication, JDBC driver debugging, more advanced ORM, and more.
AntUnit is a library of Ant tasks that was initially developed to write tests for Ant tasks without resorting to JUnit. It makes it easy to turn an existing build file that exhibits an error into an AntUnit test. Tests are written as targets in a build file using assertion tasks provided by AntUnit. The antunit task executes targets in a collection of build files and supports custom listeners in a manner similar to the junit task's formatters.
Barcode4J is a barcode generation package. The following symbologies are currently implemented: Interleaved 2 of 5, Code 39, Codabar, Code 128, UPC-A and UPC-E (with supplementals), EAN-13 and EAN-8 (with supplementals), EAN-128, POSTNET, Royal Mail Customer Barcode, PDF417, and DataMatrix. Supported output formats are SVG, EPS (Encapsulated PostScript), Bitmap images (such as PNG or JPEG), and Java2D (AWT). Additional features include two APIs (XML-oriented and Bean-style), a Servlet with support for SVG, EPS, and bitmap output, a command-line interface, a demonstration applet, and extensions for Apache Xalan-J, SAXON, and Apache FOP.