Commons-dbcp allows you to share a pool of database connections between users. Creating a new connection for each user can be time consuming and even unfeasible when the number of simultaneous users is very large. This package provides a way to share a poole of connections to reduce that load.

This package provides the API module of the Log4j logging framework for Java.

OPS4J stands for Open Participation Software for Java. This package contains utilities and extensions related to java.lang.

jakarta-regexp is an old regular expression parser generator for Java.

OSGi, for Open Services Gateway initiative framework, is a module system and service platform for the Java programming language. This package contains a factory for JDBC connection factories. There are 3 preferred connection factories for getting JDBC connections:

• javax.sql.DataSource;

• javax.sql.ConnectionPoolDataSource;

• javax.sql.XADataSource.

QDox is a high speed, small footprint parser for extracting class/interface/method definitions from source files complete with JavaDoc @tags. It is designed to be used by active code generators or documentation tools.

This package contains the runtime library used with generated sources by ANTLR.

The Bean Scripting Framework (BSF) is a set of Java classes which provides scripting language support within Java applications, and access to Java objects and methods from scripting languages. BSF allows one to write JSPs in languages other than Java while providing access to the Java class library. In addition, BSF permits any Java application to be implemented in part (or dynamically extended) by a language that is embedded within it. This is achieved by providing an API that permits calling scripting language engines from within Java, as well as an object registry that exposes Java objects to these scripting language engines.

This package provides the Eclipse Java core batch compiler.

This package is a Maven plugin to generate Plexus descriptors from source tags and class annotations.

FEST-Assert provides a fluent interface for assertions.

PowerMock is a framework that extends other mock libraries such as EasyMock with more powerful capabilities. PowerMock uses a custom classloader and bytecode manipulation to enable mocking of static methods, constructors, final classes and methods, private methods, removal of static initializers and more. By using a custom classloader no changes need to be done to the IDE or continuous integration servers which simplifies adoption.

Tinybundles is all about creating OSGi related artifacts like Bundles, Fragments and Deployment Packages with Java Api. It is very convenient to create such artifacts on-the-fly inside Tests (like in Pax Exam). On the other hand, this library can be a foundation of real end user tools that need to create those artifacts.

This package provides the Java development kit OpenJDK.

Java-jboss-transaction-api-spec implements the Transactions API. A transaction is a unit of work containing one or more operations involving one or more shared resources having ACID (Atomicity, Consistency, Isolation and Durability) properties.

JMock is a library that supports test-driven development of Java code with mock objects. Mock objects help you design and test the interactions between the objects in your programs.

The jMock library

• makes it quick and easy to define mock objects

• lets you precisely specify the interactions between your objects, reducing the brittleness of your tests

• plugs into your favourite test framework

• is easy to extend.

Although the java.net package provides basic functionality for accessing resources via HTTP, it doesn't provide the full flexibility or functionality needed by many applications. HttpClient seeks to fill this void by providing an efficient, up-to-date, and feature-rich package implementing the client side of the most recent HTTP standards and recommendations.

OSGi, for Open Services Gateway initiative framework, is a module system and service platform for the Java programming language. This package contains the packageadmin service.

ASM is an all purpose Java bytecode manipulation and analysis framework. It can be used to modify existing classes or dynamically generate classes, directly in binary form. The provided common transformations and analysis algorithms allow easily assembling custom complex transformations and code analysis tools.

Ant is a platform-independent build tool for Java. It is similar to make but is implemented using the Java language, requires the Java platform, and is best suited to building Java projects. Ant uses XML to describe the build process and its dependencies, whereas Make uses Makefile format.

OSGi, for Open Services Gateway initiative framework, is a module system and service platform for the Java programming language. This package contains bundle tracking utility classes.

The Xerces2 Java parser is the reference implementation of XNI, the Xerces Native Interface, and also a fully conforming XML Schema processor.

Xerces2-J supports the following standards and APIs:

• eXtensible Markup Language (XML) 1.0 Second Edition Recommendation

• Namespaces in XML Recommendation

• Document Object Model (DOM) Level 2 Core, Events, and Traversal and Range Recommendations

• Simple API for XML (SAX) 2.0.1 Core and Extension

• Java APIs for XML Processing (JAXP) 1.2.01

• XML Schema 1.0 Structures and Datatypes Recommendations

• Experimental implementation of the Document Object Model (DOM) Level 3 Core and Load/Save Working Drafts

• Provides a partial implementation of the XML Inclusions (XInclude) W3C Candidate Recommendation

Xerces is now able to parse documents written according to the XML 1.1 Candidate Recommendation, except that it does not yet provide an option to enable normalization checking as described in section 2.13 of this specification. It also handles namespaces according to the XML Namespaces 1.1 Candidate Recommendation, and will correctly serialize XML 1.1 documents if the DOM level 3 load/save API's are in use.

Java-cdi-api contains the required APIs for Contexts and Dependency Injection (CDI).

The Commons Lang components contains a set of Java classes that provide helper methods for standard Java classes, especially those found in the java.lang package. The following classes are included:

• StringUtils - Helper for java.lang.String.

• CharSetUtils - Methods for dealing with CharSets, which are sets of characters such as [a-z] and [abcdez].

• RandomStringUtils - Helper for creating randomised strings.

• NumberUtils - Helper for java.lang.Number and its subclasses.

• NumberRange - A range of numbers with an upper and lower bound.

• ObjectUtils - Helper for java.lang.Object.

• SerializationUtils - Helper for serializing objects.

• SystemUtils - Utility class defining the Java system properties.

• NestedException package - A sub-package for the creation of nested exceptions.

• Enum package - A sub-package for the creation of enumerated types.

• Builder package - A sub-package for the creation of equals, hashCode, compareTo and toString methods.