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The javax.servlet package lacks support for RFC-1867, HTML file upload. This package provides a simple to use API for working with such data. The scope of this package is to create a package of Java utility classes to read multipart/form-data within a javax.servlet.http.HttpServletRequest.
Commons-IO contains utility classes, stream implementations, file filters, and endian classes. It is a library of utilities to assist with developing IO functionality.
Defines a simple interpreter of an expression language called XPath. JXPath applies XPath expressions to graphs of objects of all kinds: JavaBeans, Maps, Servlet contexts, DOM etc, including mixtures thereof.
The standard Java libraries fail to provide enough methods for manipulation of its core classes. The Commons Lang Component provides these extra methods. The Commons Lang Component provides a host of helper utilities for the java.lang API, notably String manipulation methods, basic numerical methods, object reflection, creation and serialization, and System properties. Additionally it contains an inheritable enum type, an exception structure that supports multiple types of nested-Exceptions and a series of utilities dedicated to help with building methods, such as hashCode, toString and equals.
The standard Java libraries fail to provide enough methods for manipulation of its core classes. The Commons Lang Component provides these extra methods. The Commons Lang Component provides a host of helper utilities for the java.lang API, notably String manipulation methods, basic numerical methods, object reflection, creation and serialization, and System properties. Additionally it contains an inheritable enum type, an exception structure that supports multiple types of nested-Exceptions and a series of utilities dedicated to help with building methods, such as hashCode, toString and equals. With version of commons-lang 3.x, developers decided to change API and therefore created differently named artifact and jar files. This is the new version, while apache-commons-lang is the compatibility package.
The commons-logging package provides a simple, component oriented interface (org.apache.commons.logging.Log) together with wrappers for logging systems. The user can choose at runtime which system they want to use. In addition, a small number of basic implementations are provided to allow users to use the package standalone. commons-logging was heavily influenced by Avalon's Logkit and Log4J. The commons-logging abstraction is meant to minimize the differences between the two, and to allow a developer to not tie himself to a particular logging implementation.
The Project Object Model files for the apache-commons packages.
The goal of Pool package is it to create and maintain an object (instance) pooling package to be distributed under the ASF license. The package should support a variety of pool implementations, but encourage support of an interface that makes these implementations interchangeable.
A common issue when receiving data either electronically or from user input is verifying the integrity of the data. This work is repetitive and becomes even more complicated when different sets of validation rules need to be applied to the same set of data based on locale for example. Error messages may also vary by locale. This package attempts to address some of these issues and speed development and maintenance of validation rules.
Commons VFS provides a single API for accessing various different file systems. It presents a uniform view of the files from various different sources, such as the files on local disk, on an HTTP server, or inside a Zip archive. Some of the features of Commons VFS are: * A single consistent API for accessing files of different types. * Support for numerous file system types. * Caching of file information. Caches information in-JVM, and optionally can cache remote file information on the local file system. * Event delivery. * Support for logical file systems made up of files from various different file systems. * Utilities for integrating Commons VFS into applications, such as a VFS-aware ClassLoader and URLStreamHandlerFactory. * A set of VFS-enabled Ant tasks.