From MSDN: “Welcome to Beta 2 of Microsoft Visual J# .NET, a development tool for Java-language developers who want to build applications and services on the .NET Framework. The tool integrates the Java-language syntax into the Microsoft Visual Studio .NET IDE, and supports the functionality found in Visual J++ 6.0, including Microsoft extensions such as JavaCOM and JDirect. Microsoft Visual J# .NET is not a tool for developing applications intended to run on a Java virtual machine. Applications and services built with Visual J# .NET will run only in the .NET Framework; they will not run on any Java virtual machine. Visual J# .NET has been independently developed by Microsoft. It is not endorsed or approved by Sun Microsystems, Inc.” The installation file is 12 MB.