Apache Commons Lang

Apache Commons Lang, a package of Java utility classes for the classes that are in java.lang's hierarchy, or are considered to be so standard as to justify existence in java.lang.

Documentation

More information can be found on the Apache Commons Lang homepage. The Javadoc can be browsed. Questions related to the usage of Apache Commons Lang should be posted to the [user mailing list][ml].

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:

<dependency>
  <groupId>org.apache.commons</groupId>
  <artifactId>commons-lang3</artifactId>
  <version>3.12.0</version>
</dependency>

Contributing

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.

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 Lang? Then donate back to the ASF to support the development.

Additional Resources

• Apache Commons Homepage
• Apache Issue Tracker (JIRA)
• Apache Commons Slack Channel
• Apache Commons Twitter Account
• #apache-commons IRC channel on irc.freenode.org

Apache Commons Components

Component	GitHub Repository	Apache Homepage
Apache Commons BCEL	commons-bcel	commons-bcel
Apache Commons Beanutils	commons-beanutils	commons-beanutils
Apache Commons BSF	commons-bsf	commons-bsf
Apache Commons Build-plugin	commons-build-plugin	commons-build-plugin
Apache Commons Chain	commons-chain	commons-chain
Apache Commons CLI	commons-cli	commons-cli
Apache Commons Codec	commons-codec	commons-codec
Apache Commons Collections	commons-collections	commons-collections
Apache Commons Compress	commons-compress	commons-compress
Apache Commons Configuration	commons-configuration	commons-configuration
Apache Commons Crypto	commons-crypto	commons-crypto
Apache Commons CSV	commons-csv	commons-csv
Apache Commons Daemon	commons-daemon	commons-daemon
Apache Commons DBCP	commons-dbcp	commons-dbcp
Apache Commons Dbutils	commons-dbutils	commons-dbutils
Apache Commons Digester	commons-digester	commons-digester
Apache Commons Email	commons-email	commons-email
Apache Commons Exec	commons-exec	commons-exec
Apache Commons Fileupload	commons-fileupload	commons-fileupload
Apache Commons Functor	commons-functor	commons-functor
Apache Commons Geometry	commons-geometry	commons-geometry
Apache Commons Graph	commons-graph	commons-graph
Apache Commons Imaging	commons-imaging	commons-imaging
Apache Commons IO	commons-io	commons-io
Apache Commons JCI	commons-jci	commons-jci
Apache Commons JCS	commons-jcs	commons-jcs
Apache Commons Jelly	commons-jelly	commons-jelly
Apache Commons Jexl	commons-jexl	commons-jexl
Apache Commons Jxpath	commons-jxpath	commons-jxpath
Apache Commons Lang	commons-lang	commons-lang
Apache Commons Logging	commons-logging	commons-logging
Apache Commons Math	commons-math	commons-math
Apache Commons Net	commons-net	commons-net
Apache Commons Numbers	commons-numbers	commons-numbers
Apache Commons Parent	commons-parent	commons-parent
Apache Commons Pool	commons-pool	commons-pool
Apache Commons Proxy	commons-proxy	commons-proxy
Apache Commons RDF	commons-rdf	commons-rdf
Apache Commons Release-plugin	commons-release-plugin	commons-release-plugin
Apache Commons Rng	commons-rng	commons-rng
Apache Commons Scxml	commons-scxml	commons-scxml
Apache Commons Signing	commons-signing	commons-signing
Apache Commons Skin	commons-skin	commons-skin
Apache Commons Statistics	commons-statistics	commons-statistics
Apache Commons Testing	commons-testing	commons-testing
Apache Commons Text	commons-text	commons-text
Apache Commons Validator	commons-validator	commons-validator
Apache Commons VFS	commons-vfs	commons-vfs
Apache Commons Weaver	commons-weaver	commons-weaver