Editing Visual J Sharp (section)

{{Short description|Programming language}}
{{Distinguish|text=[[J (programming language)|J]] or [[Visual J++|J++]]}}
{{Correct title|title=Visual J#}}
{{Infobox programming language
| name = Visual J#
| logo = 
| file_ext = 
| paradigm = [[Object-oriented programming|Object-oriented]], [[structured programming|structured]], [[imperative programming|imperative]]
| year = {{Start date and age|2002|07|01}}
| designer = 
| developer = [[Microsoft]]
| discontinued = yes
| ver layout = <!-- simple (default) or stacked -->
| latest_release_version = v2.0 Second Edition
| latest_release_date = {{Start date and age|2007|05|18|df=yes}}
| latest_test_version = 
| latest_test_date = 
| typing = 
| implementations = 
| dialects = 
| influenced_by = [[Java (programming language)|Java]] and [[Visual J++]]
| influenced = 
| platform = [[.NET Framework]]
| license = 
| website = 
| wikibooks = 
}}

'''Visual J#''' (pronounced "jay-[[sharp (music)|sharp]]") is a discontinued implementation of the J# [[programming language]] that was a transitional language for programmers of [[Java (programming language)|Java]] and [[Visual J++]] languages, so they could use their existing knowledge and applications with the [[.NET Framework]].<ref>{{Cite web|url=https://msdn.microsoft.com/en-us/vstudio/bb188593|title=Visual J# Home|website=msdn.microsoft.com|language=en|access-date=2017-03-24}}</ref><ref>{{Cite web |url=http://msdn2.microsoft.com/en-us/vjsharp/aa700852.aspx |title=Java to .NET Framework Migration Workshop: Free Online Training |date=30 April 2007 |access-date=2020-01-28 |archive-url=https://web.archive.org/web/20080423005729/http://msdn2.microsoft.com/en-us/vjsharp/aa700852.aspx |archive-date=2008-04-23 |url-status=bot: unknown }}</ref> It was introduced in 2002<ref>Microsoft News, [https://news.microsoft.com/2002/07/01/microsoft-rounds-out-developer-languages-with-launch-of-visual-j-net/], 1 July 2002</ref> and discontinued in 2007, with support for the final release of the product continuing until October 2017.

J# worked with [[Java bytecode]] as well as source so it could be used to transition applications that used third-party [[Library (computer science)|libraries]], even if their original [[source code]] was unavailable.{{Citation needed|date=February 2017}} It was developed by the [[Hyderabad, Telangana|Hyderabad]]-based [[HITEC City#Microsoft Hyderabad Campus|Microsoft India Development Center at HITEC City]] in India.<ref>S Prasanna, [http://www.expresscomputeronline.com/20020729/indnews3.shtml Microsoft's VJ#.Net is made in India], ''Express Computer'', 29 July 2002 {{webarchive|url=https://web.archive.org/web/20131128170355/http://computer.financialexpress.com/20020729/indnews3.shtml |date=28 November 2013 }}</ref><ref>{{cite news|title=The Hindu Business Line : Microsoft lines up big plans for Hyderabad centre|url=http://www.thehindubusinessline.com/bline/2002/08/15/stories/2002081500530700.htm|work=www.thehindubusinessline.com}}</ref>

The implementation of Java in [[Visual J++]], MSJVM, did not pass [[Sun Microsystems|Sun]]'s compliance tests leading to a lawsuit from Sun, Java's creator, and creation of J#. Microsoft ceased such support for the MSJVM on December 31, 2007 (later Oracle bought Sun, and with it Java and its trademarks). Microsoft however, officially started distributing Java again in 2021 (though not bundled with Windows or its web browsers as before with J++), i.e. their build of Oracle's OpenJDK,<ref>{{Cite web|date=2021-05-25|title=Announcing General Availability of Microsoft Build of OpenJDK|url=https://devblogs.microsoft.com/java/announcing-general-availability-of-microsoft-build-of-openjdk/|access-date=2021-08-03|website=Java at Microsoft|language=en-US}}</ref> which Microsoft plans to support for at least 6 years, for LTS versions, i.e. to September 2027 for Java 17.