| Attributes |
Runtime API to metadata attributes such as doclet tags. |
| BCEL |
Byte Code Engineering Library - analyze, create, and manipulate Java class files |
| BeanUtils |
Easy-to-use wrappers around the Java reflection and introspection APIs. |
| Betwixt |
Services for mapping JavaBeans to XML documents, and vice versa. |
| BSF |
Bean Scripting Framework - interface to scripting languages, including JSR-223 |
| Chain |
Chain of Responsibility pattern implemention. |
| CLI |
Command Line arguments parser. |
| Codec |
General encoding/decoding algorithms (for example phonetic, base64, URL). |
| Collections |
Extends or augments the Java Collections Framework. |
| Compress |
Defines an API for working with tar, zip and bzip2 files. |
| Configuration |
Reading of configuration/preferences files in various formats. |
| Daemon |
Alternative invocation mechanism for unix-daemon-like java code. |
| DBCP |
Database connection pooling services. |
| DbUtils |
JDBC helper library. |
| Digester |
XML-to-Java-object mapping utility. |
| Discovery |
Tools for locating resources by mapping service/reference names to resource names. |
| EL |
Interpreter for the Expression Language defined by the JSP 2.0 specification. |
| Email |
Library for sending e-mail from Java. |
| Exec |
API for dealing with external process execution and environment management in Java. |
| FileUpload |
File upload capability for your servlets and web applications. |
| Functor |
A functor is a function that can be manipulated as an object, or an object representing a single, generic function. |
| IO |
Collection of I/O utilities. |
| JCI |
Java Compiler Interface |
| JCS |
Java Caching System |
| Jelly |
XML based scripting and processing engine. |
| Jexl |
Expression language which extends the Expression Language of the JSTL. |
| JXPath |
Utilities for manipulating Java Beans using the XPath syntax. |
| Lang |
Provides extra functionality for classes in java.lang. |
| Launcher |
Cross platform Java application launcher. |
| Logging |
Wrapper around a variety of logging API implementations. |
| Math |
Lightweight, self-contained mathematics and statistics components. |
| Modeler |
Mechanisms to create Model MBeans compatible with JMX specification. |
| Net |
Collection of network utilities and protocol implementations. |
| OGNL |
An Object-Graph Navigation Language |
| Pool |
Generic object pooling component. |
| Primitives |
Smaller, faster and easier to work with types supporting Java primitive types. |
| Proxy |
Library for creating dynamic proxies. |
| Sanselan |
A pure-Java image library. |
| SCXML |
An implementation of the State Chart XML specification aimed at creating and maintaining a Java SCXML engine. It is capable of executing a state machine defined using a SCXML document, and abstracts out the environment interfaces. |
| Transaction |
Implementations for multi level locks, transactional collections and transactional file access. |
| Validator |
Framework to define validators and validation rules in an xml file. |
| VFS |
Virtual File System component for treating files, FTP, SMB, ZIP and such like as a single logical file system. |