http://www.javaworld.com/javaworld/jw-11-2001/jw-1121-iw-jsharp.htmlMicrosoft supplies assemblies that provide the functionality of Sun's JDK 1.1.4
without using any Sun code, thus avoiding Sun's control and, Microsoft hopes, its
legal wrath.
http://uk.builder.com/programming/windows/0,39026618,20264159,00.htm
In its suit, Sun also alleges that "Microsoft has made false and deceptive statements regarding the ability of its Visual J# .Net product to pass the Java compatibility test suites" -- tests from Sun that ensure that software said to run Java programs works properly.
Goodhew counters, "There is no Sun intellectual property used in the product, nor do we make any claims that it will produce applications that pass any Sun tests or run on any Sun-licensed platform."