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Commons-IO contains utility classes, stream implementations, file filters, and endian classes. It is a library of utilities to assist with developing IO functionality.
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 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.
ApacheTop watches a logfile generated by Apache (in standard common or combined logformat, although it doesn't (yet) make use of any of the extra fields in combined) and generates human-parsable output in realtime.
The JSR-296 Swing Application Framework prototype implementation is a small set of Java classes that simplify building desktop applications.
The mission of the Apache Portable Runtime (APR) is to provide a free library of C data structures and routines, forming a system portability layer to as many operating systems as possible, including Unices, MS Win32, BeOS and OS/2.
The mission of the Apache Portable Runtime (APR) is to provide a free library of C data structures and routines. This library contains additional utility interfaces for APR; including support for XML, LDAP, database interfaces, URI parsing and more.