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The Apache Logging Services Project creates and maintains open-source software related to the logging of application behavior and released at no charge to the public. Apache Log4j. Log4j 2 is an upgrade to Log4j that provides significant improvements over its predecessor, Log4j 1.x. Download apache-lang common from apache jakarta site: Page on apache.org After getting jar file please put this jar in your project's build path, if you are not able to find build path then go Jdeveloper help file and type 'build path' and you will get all intrustion over there.
- Download Org.apache.commons.httpclient.httpclient
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- Download Org.apache.commons.codec.binary.base64 Jar
The Apache Commons IO library contains utility classes, stream implementations, file filters,file comparators, endian transformation classes, and much more.
Documentation
More information can be found on the Apache Commons IO homepage.The Javadoc can be browsed.Questions related to the usage of Apache Commons IO should be posted to the user mailing list.
Where can I get the latest release?
You can download source and binaries from our download page.
Alternatively you can pull it from the central Maven repositories:
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Contributing
Download Org.apache.commons.httpclient.httpclient
We accept Pull Requests via GitHub. The developer mailing list is the main channel of communication for contributors.There are some guidelines which will make applying PRs easier for us:
- No tabs! Please use spaces for indentation.
- Respect the code style.
- Create minimal diffs - disable on save actions like reformat source code or organize imports. If you feel the source code should be reformatted create a separate PR for this change.
- Provide JUnit tests for your changes and make sure your changes don't break any existing tests by running
mvn clean test.
If you plan to contribute on a regular basis, please consider filing a contributor license agreement.You can learn more about contributing via GitHub in our contribution guidelines.
License
This code is under the Apache Licence v2.
See the NOTICE.txt file for required notices and attributions.
Donations
You like Apache Commons IO? Then donate back to the ASF to support the development.
Additional Resources
#apache-commonsIRC channel onirc.freenode.org
The Apache Commons is a project of the Apache Software Foundation, formerly under the Jakarta Project. The purpose of the Commons is to provide reusable, open source Java software. The Commons is composed of three parts: proper, sandbox, and dormant.
Commons Proper[edit]
The Commons Proper is dedicated to creating and maintaining reusable Java components. The Commons Proper is a place for collaboration and sharing, where developers from throughout the Apache community can work together on projects to be shared by Apache projects and Apache users.Commons developers will make an effort to ensure that their components have minimal dependencies on other software libraries, so that these components can be deployed easily. In addition, Commons components will keep their interfaces as stable as possible, so that Apache users, as well as other Apache projects, can implement these components without having to worry about changes in the future.[1]
| Components | Description | Latest version | Released |
|---|---|---|---|
| BCEL | Byte Code Engineering Library - analyze, create, and manipulate Java class files | 6.3.1 | 2019-03-20 |
| BeanUtils | Easy-to-use wrappers around the Java reflection and introspection APIs. | 1.9.4 | 2019-08-13 |
| BSF | Bean Scripting Framework - interface to scripting languages, including JSR-223 | 3.1 | 2010-24-06 |
| Chain | Chain of Responsibility pattern implementation. | 1.2 | 2008-06-02 |
| CLI | Command Line arguments parser. | 1.4 | 2017-03-09 |
| Codec | General encoding/decoding algorithms (for example phonetic, base64, URL). | 1.13 | 2019-07-20 |
| Collections | Extends or augments the Java Collections Framework. | 4.3 | 2018-12-21 |
| Compress | Defines an API for working with tar, zip and bzip2 files. | 1.19 | 2019-08-27 |
| Configuration | Reading of configuration/preferences files in various formats. | 2.5 | 2019-05-23 |
| Crypto | A cryptographic library optimized with AES-NI wrapping Openssl or JCE algorithm implementations | 1.0.0 | 2016-08-09 |
| CSV | Component for reading and writing comma separated value files. | 1.6 | 2018-09-22 |
| Daemon | Alternative invocation mechanism for unix-daemon-like java code. | 1.2.0 | 2019-06-28 |
| DBCP | Database connection pooling services. | 2.7.0 | 2019-07-31 |
| DbUtils | JDBC helper library. | 1.7 | 2017-07-20 |
| Digester | XML-to-Java-object mapping utility. | 3.2 | 2011-12-13 |
| Library for sending e-mail from Java. | 1.5 | 2017-08-01 | |
| Exec | API for dealing with external process execution and environment management in Java. | 1.3 | 2014-11-06 |
| FileUpload | File upload capability for your servlets and web applications. | 1.4 | 2018-12-23 |
| Functor | A functor is a function that can be manipulated as an object, or an object representing a single, generic function. | 1.0 | 2012-??-?? |
| Geometry | Space and coordinates. | 1.0 | TBD |
| Imaging | A pure-Java image library. | 1.0-alpha1 | 2019-04-28 |
| IO | Collection of I/O utilities. | 2.6 | 2017-10-15 |
| JCI | Java Compiler Interface | 1.1 | 2013-10-14 |
| JCS | Java Caching System | 2.2.1 | 2018-08-21 |
| Jelly | XML based scripting and processing engine. | 1.0.1 | 2017-09-25 |
| JEXL | Expression language which extends the Expression Language of the JSTL. | 3.1 | 2017-04-14 |
| JXPath | Utilities for manipulating Java Beans using the XPath syntax. | 1.3 | 2008-08-14 |
| Lang | Provides extra functionality for classes in java.lang. | 3.9 | 2019-04-09 |
| Logging | Wrapper around a variety of logging API implementations. | 1.2 | 2014-07-11 |
| Math | Lightweight, self-contained mathematics and statistics components. | 3.6.1 | 2016-03-21 |
| Net | Collection of network utilities and protocol implementations. | 3.6 | 2017-02-15 |
| Numbers | Number types (complex, quaternion, fraction) and utilities (arrays, combinatorics). | 1.0 | TBD |
| OGNL | An Object-Graph Navigation Language | 4.0-incubating | TBD |
| Pool | Generic object pooling component. | 2.7.0 | 2019-07-29 |
| Proxy | Library for creating dynamic proxies. | 1.0 | 2008-03-06 |
| RDF | Common implementation of RDF 1.1 that could be implemented by systems on the JVM. | 0.3.0-incubating | 2016-11-15 |
| RNG | Commons Rng provides implementations of pseudo-random numbers generators. | 1.2 | 2018-12-12 |
| SCXML | An implementation of the State Chart XML specification aimed at creating and maintaining a Java SCXML engine. | 0.9 | 2008-12-01 |
| Text | A library focused on algorithms working on strings. | 1.8 | 2019-08-30 |
| Validator | Framework to define validators and validation rules in an xml file. | 1.6 | 2017-02-20 |
| VFS | Virtual File System component for treating files, FTP, SMB, ZIP and such like as a single logical file system. | 2.4.1 | 2019-08-10 |
| Weaver | Provides an easy way to enhance (weave) compiled bytecode. | 2.0 | 2018-09-07 |
Commons Sandbox[edit]
The Commons Sandbox provides a workspace where Commons contributors collaborate and experiment on projects not included in the Commons Proper. Commons members champion projects in the Sandbox for promotion to the Commons Proper, and groups of developers work to enhance Sandbox projects until they meet the standards for promotion.
| Components | Description |
|---|---|
| BeanUtils2 | Redesign of Commons BeanUtils. |
| ClassScan | Find Class interfaces, methods, fields, and annotations without loading. |
| CLI2 | Redesign of Commons CLI. |
| Convert | Commons-Convert aims to provide a single library dedicated to the task of converting an object of one type to another. |
| Finder | Java library inspired by the UNIX find command. |
| Flatfile | Java library for working with flat data structures. |
| Graph | A general purpose Graph APIs and algorithms. |
| I18n | Adds the feature of localized message bundles that consist of one or many localized texts that belong together. |
| Id | Id is a component used to generate identifiers. |
| Inject | Implementation of JSR 330, a standards compliant dependency injection framework |
| Javaflow | Continuation implementation to capture the state of the application. |
| JNet | JNet allows using dynamically registered url stream handlers through the java.net API. |
| Monitoring | Monitoring aims to provide a simple but extensible monitoring solution for Java applications. |
| Nabla | Nabla provides automatic differentiation classes that can generate derivative of any function implemented in the Java language. |
| OpenPGP | Interface to signing and verifying data using OpenPGP. |
| Performance | A small framework for microbenchmark clients, with implementations for Commons DBCP and Pool. |
| Pipeline | Provides a set of pipeline utilities designed around work queues that run in parallel to sequentially process data objects. |
Commons Dormant[edit]
Download Org.apache.commons.lang.stringescapeutils
The Commons Dormant is a collection of components that have been declared inactive due to little recent development activity. These components may be used, but must be built yourself. It is best to assume that these components will not be released in the near future.
| Components | Description |
|---|---|
| Attributes | Runtime API to metadata attributes such as doclet tags. |
| Betwixt | Services for mapping JavaBeans to XML documents, and vice versa. |
| Cache | Cache provides object caching services. |
| Clazz | Clazz focuses on introspection and class manipulation. |
| Contract | This component makes all the nice features available to the java programming language that come along with contract based programming. |
| Convert | Commons-Convert aims to provide a single library dedicated to the task of converting an object of one type to another. |
| 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. |
| Events | Commons-Events provides additional classes for firing and handling events. It focusses on the Java Collections Framework, providing decorators to other collections that fire events. |
| Feedparser | A Java RSS/Atom parser designed to elegantly support all major versions of RSS and Atom, as well as easy ad hoc extension and RSS 1.0 modules capability. |
| JJar | Jakarta JAR Archive Repository |
| Latka | Commons-Latka is an HTTP functional testing suite for automated QA, acceptance and regression testing. |
| Launcher | Cross platform Java application launcher. |
| Mapper | Mapper is a thin abstraction layer around a project's chosen data mapping technology (a.k.a. DAO pattern). |
| Messenger | Messenger is an easy to use and lightweight framework for working with JMS in the web tier. |
| Modeler | Mechanisms to create Model MBeans compatible with JMX specification. |
| Primitives | Smaller, faster and easier to work with types supporting Java primitive types. |
| Resources | Resources provides a lightweight framework for defining and looking up internationalized message strings keyed by a java.util.Locale and a message key. |
| Scaffold | Scaffold is a toolkit for building web applications. |
| ThreadPool | ThreadPool is a simple component for asynchronously dispatching work to another thread in a pool for simple multi threaded programming. |
| Transaction | Implementations for multi level locks, transactional collections and transactional file access. |
| Workflow | Workflow provides a framework for building workflow management systems. |
| XMLIO | Simple and fast importer for XML configuration or import files. |
See also[edit]
References[edit]
Goyal, Vikram (2003), Using the Jakarta Commons, Part I, retrieved August 13, 2006