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GNU Classpath
Free core class libraries for the Java programming language

GNU Classpath (Essential Libraries for Java) is a project to create free core class libraries for use with virtual machines, compilers and tools for the Java programming language.

It includes all native methods and core classes necessary for a completely functional Java runtime.

Documentation or
"IRC [] " IRC Help channel

"IRC [] " IRC development channel

Heckert gnu.small.png This is a GNU package:classpath


Download version 0.99 (stable)
released on 16 March 2012

VCS Checkout


Related Projects


LicenseVerified byVerified onNotes
GPLv2orlater with exceptionKelly Hopkins10 February 2009
GPLv2orlaterKelly Hopkins10 February 2009

Leaders and contributors

Mark Wielaard Maintainer

Resources and communication

AudienceResource typeURI
DeveloperVCS Repository Webview
Bug TrackingVCS Repository Webview
Bug Tracking,Developer,Help,

Software prerequisites

Required to buildgconf 2.11.2 (or higher).
Required to useetc.) mentioned on
Required to usecacao
Required to buildGTK+ 2.8.x (or higher)
Required to buildgdk-pixbuf
Required to usejamvm
Required to buildXTest Extension (libXtst)
Required to useCompiler like gcc (which includes gcj) and/or one of the free runtimes (kaffe

This entry (in part or in whole) was last reviewed on 21 January 2017.


"java" is not in the list (C, C++, Image-processing, Java, Localization, User-interface, JavaScript, Web) of allowed values for the "Library" property.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the page “GNU Free Documentation License”.

The copyright and license notices on this page only apply to the text on this page. Any software or copyright-licenses or other similar notices described in this text has its own copyright notice and license, which can usually be found in the distribution or license text itself.