Editing Visual J Sharp (section)

==Fundamental differences between J# and Java==
Java and J# use the same general syntax but there are non-Java conventions in J# to support the .NET environment. For example, to use .NET "properties" with a standard [[JavaBean]] class, it is necessary to prefix getter and setter methods with the [[Javadoc]]-like annotation:

<syntaxhighlight lang="java">/** @beanproperty */</syntaxhighlight>

…and change the corresponding private variable name to be different from the suffix of the getXxx/setXxx names{{Citation needed|date=February 2017}}.

J# does not compile Java-language source code to Java bytecode (.class files), and does not support [[Java applet]] development or the ability to host applets directly in a [[web browser]], although it does provide a wrapper called Microsoft J# Browser Controls for hosting them as [[ActiveX]] objects. Finally, [[Java Native Interface]] (JNI) and [[Java Native Interface#Microsoft.27s RNI|raw native interface]] (RNI) are substituted with [[Platform Invocation Services|P/Invoke]]; J# does not support [[remote method invocation]] (RMI).<ref>{{cite web|url=http://msdn.microsoft.com/en-us/library/7622y256(v=vs.80).aspx|title=Visual J# Migration|department=[[Visual Studio 2005]]|work=[[MSDN Library]]|archive-url=https://web.archive.org/web/20120316061217/http://msdn.microsoft.com/en-us/library/7622y256(v=vs.80).aspx|archive-date=2012-03-16|access-date=2021-12-25}}</ref>

''[[InfoWorld]]'' said: "J#'s interface to the .NET framework is solid, but not as seamless as [[C Sharp (programming language)|C#]]. In particular, J# code cannot define new .NET attributes, events, value types, or delegates. J# can make use of these language constructs if they are defined in an assembly written in another language, but its inability to define new ones limits J#'s reach and interoperability compared to other .NET languages."<ref>{{cite web |last1=Yager |first1=Tom |date=2001-11-21 |df=dmy |url=https://www.infoworld.com/article/2075819/just-don-t-call-j--java.html |title=Just don't call J# Java |work=[[InfoWorld]] |access-date=2020-07-20}}</ref>

Contrariwise, Microsoft documentation for Visual Studio 2005 details the definition of .NET delegates,<ref>{{cite web |url=https://msdn.microsoft.com/en-us/library/0kks3c36(v=vs.80).aspx |title=delegate (Visual J#) |department=[[Visual Studio 2005]] |work=[[MSDN Library]] |archive-url=https://web.archive.org/web/20111219230625/http://msdn.microsoft.com/en-US/library/0kks3c36(v=VS.80).aspx |archive-date=2011-12-19}}</ref> events,<ref>{{cite web |url=https://msdn.microsoft.com/en-us/library/09b0135h(v=vs.80).aspx |title=Definition and Use of Events |department=[[Visual Studio 2005]] |work=[[MSDN Library]] |archive-url=https://web.archive.org/web/20111219230625/https://msdn.microsoft.com/en-us/library/09b0135h(v=vs.80).aspx |archive-date=2011-12-19}}</ref> and value types<ref>{{cite web |url=https://msdn.microsoft.com/en-us/library/wysdab55(v=vs.80).aspx |title=User-Defined Value Types |department=[[Visual Studio 2005]] |work=[[MSDN Library]] |archive-url=https://web.archive.org/web/20111220004451/http://msdn.microsoft.com/en-US/library/wysdab55(v=VS.80).aspx |archive-date=2011-12-20}}</ref> directly in J#.