Free Java implementations: Difference between revisions

Revision as of 00:54, 15 November 2016

Revision as of 11:21, 2 December 2016

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Advocates of free and open source software refer to free or open source [[Java virtual machine]] software as '''free runtimes''' or '''free Java runtimes'''.

Some advocates in this movement prefer not to use the term "Java" as it has [[trademark]] issues associated with it. Hence, even though it is a "free Java movement", the term "free Java runtimes" is avoided by them.

though it is a "free Java movement", the term "free Java runtimes" is avoided by them.

==Mid-90s1990s to 2006==

Probably the first free project to offer substantial parts of Java platform functionality was guavac, which began some time before November 1995.<ref>{{cite web

|url=http://www.ccs.neu.edu/research/demeter/course/f96/hw/1/guavac-info

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}}</ref>

Examples of free [[List of Java virtual machines|runtime environments]] include [[Kaffe]], [[SableVM]] and [[gcj]].

[[SableVM]] and [[gcj]].

[[GNU Classpath]] is the main free software [[Java Class Library|class library]] for Java. Most free runtimes use GNU Classpath as their class library.

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==Sun's November 2006 announcement==

On 13 November 2006, Sun released its compiler, [[javac]], under the [[GNU General Public License]].<ref>[http://news.cnet.com/Sun-picks-GPL-license-for-Java-code/2100-7344_3-6134584.html Sun picks GPL license for Java code]</ref>

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==After the May 2007 code release==

{{See also|OpenJDK}}

{{Update|section|date=January 2014}}

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As of March 2008, the [[Fedora (operating system)|Fedora 9]] distribution has been released with OpenJDK 6 instead of the IcedTea implementation of OpenJDK 7.<ref name="fedora9redhat" /> Some of the stated reasons for this change are:

* Sun has replaced most of the encumbrances for which IcedTea was providing replacements (less than 1% of encumbered code remains in the [[Java Class Library|class library]], and this code is not necessary to run OpenJDK).

* OpenJDK 6 is a stable branch, whereas OpenJDK 7 is unstable and not expected to ship a stable release until 2009.

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==External links==

* [https://www.gnu.org/philosophy/java-trap.html Free But Shackled - The Java Trap]

* [http://developer.classpath.org/support/ Escaping the Java Trap: A practical road map to the Free Software and Open Source alternatives]

* [http://www.infoq.com/news/2007/06/openjdk-hybrids Hybrids Combine GNU Classpath and OpenJDK]

* [http://meetings-archive.debian.net/pub/debian-meetings/2007/debconf7/low/115_State_of_the_Coffee_Cup.ogg Hour long 2007 video of a workshop with Sun, GGJ, and GNU Classpath developers]

* [http://wiki.debian.org/Java/ResolveJavaNaming Java Trademark Issues]

{{Java Virtual Machine}}