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IcedTea is a build and integration project for OpenJDK launched by Red Hat in June 2007. IcedTea-Web is a free software implementation of Java Web Start and the Java web browser plugin. IcedTea-Sound is a collection of plugins for the Java sound subsystem, including the PulseAudio provider which used to be included with IcedTea. The Free Software Foundation recommends all Java programmers use IcedTea as their development environment.〔https://www.gnu.org/philosophy/java-trap.html〕 Historically, the initial goal of the IcedTea project was to make the OpenJDK software, which Sun Microsystems released as free software in 2007, usable without requiring any proprietary software, and hence make it possible to add OpenJDK to Fedora and other Linux distributions that insist on free software. This was met, and a version of IcedTea based on OpenJDK was packaged with Fedora 8 in November 2007. April 2008 saw the first release of a new variant, IcedTea6 which is based on Sun's build drops of OpenJDK6, a fork of the OpenJDK with the goal of being compatible with the existing JDK6. This was released in Ubuntu and Fedora in May 2008. The IcedTea package in these distributions has been renamed to OpenJDK using the OpenJDK trademark notice. In June 2008, the Fedora build passed Sun's rigorous TCK testing on x86 and x86-64. IcedTea 2, the first version based on OpenJDK 7, was released in October 2011.〔 〕 ==History== This project was created following Sun’s release under open source licenses of its HotSpot Virtual Machine and Java compiler in November 2006, and most of the source code of the class library in May 2007. However, parts of the class library, such as font rendering, colour management and sound support, were only provided as proprietary binary plugins. This was because the source code for these plugins was copyrighted to third parties, rather than Sun Microsystems.〔See also Java Class Library Licensing〕 The released parts were published under the terms of the GNU General Public License, a free software license. Due to these missing components, it was not possible to build OpenJDK only with free software components. Sun aimed to negotiate with the license holders to allow this code to be released under a free software license, or failing that, to replace these proprietary elements with alternative implementations. With the plugins replaced, the class library would then be completely free. Sun has continued to use the proprietary code in their certified binary releases. Following the announcement, the IcedTea project was started and was formally announced on June 7, 2007,〔 with a build repository provided by the GNU Classpath team. The team could not call their software product ''"OpenJDK"'' because this is a trademark which was owned by Sun Microsystems. They instead decided to use the temporary name ''"IcedTea"''. On November 5, 2007, Red Hat signed both the Sun Contributor Agreement and the OpenJDK Community TCK License. The press release suggested that this would benefit the IcedTea project. Simon Phipps suggested the possibility of IcedTea being hosted on openjdk.java.net, and Mark Reinhold noted that signing the copyright assignment could allow Red Hat to contribute parts of IcedTea to Sun for inclusion in the mainstream JDK. Since then, a number of patches from IcedTea have made their way into OpenJDK.〔(【引用サイトリンク】title=Bug ID 6523403: OSS CMM: Need to provide lcms library with PYCC and LINEAR_RGB OS ICC profiles )〕〔(【引用サイトリンク】title=Bug ID 6604044 java crashes talking to second X screen )〕 On June 2008, it was announced that IcedTea6 (as the packaged version of OpenJDK on Fedora 9) has passed the Technology Compatibility Kit tests and can claim to be a fully compatible Java 6 implementation. The project continues to track both OpenJDK 6 and OpenJDK 7 development in separate repositories, and contribute patches back upstream where possible; the current state of each IcedTea patch is maintained on the IcedTea wiki. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「IcedTea」の詳細全文を読む スポンサード リンク
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