Developer's DescriptionBy MicrosoftHelp Java-language developers to build applications and services on the .NET Framework.Microsoft Visual J# .NET is a development tool for Java-language developers who want to build applications and services on the .NET Framework. 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 and will not run on any Java Virtual Machine.