Collection:Apache Commons

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The Commons is an Apache project focused on all aspects of reusable Java components.

Commons Codec
General encoding/decoding algorithms (for example phonetic, base64, URL).

Commons Collections
Extends or augments the Java Collections Framework.

Commons Compress
Defines an API for working with tar, zip and bzip2 files.

Commons Configuration
Reading of configuration/preferences files in various formats.

Commons Daemon
Alternative invocation mechanism for unix-daemon-like java code.

Commons Email Library for sending e-mail from Java.

Commons Lang
Provides extra functionality for classes in java.lang.

Commons Math
Lightweight, self-contained mathematics and statistics components.

Commons Pool
Generic object pooling component.

Commons Validator
Framework to define validators and validation rules in an xml file.

Commons VFS
Virtual File System component for treating files, FTP, SMB, ZIP and such like as a single logical file system.

The Apache Commons Sandbox

A general purpose Graph APIs and algorithms.

Provides a set of pipeline utilities designed around work queues that run in parallel to sequentially process data objects data objects.

The Apache Commons Dormant

Simple and fast importer for XML configuration or import files.

Jakarta FeedParser
A Java RSS/Atom parser designed to elegantly support all versions of RSS (0.9, 0.91, 0.92, 1.0, and 2.0), Atom 0.5 (and future versions) as well as easy ad hoc extension and RSS 1.0 modules capability. objects.

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