Sun Microsystems has filed a private antitrust lawsuit against Microsoft, reportedly seeking upwards of US$1 billion in damages, according to Dow Jones. The suit alleges that Microsoft engaged in “extensive” anticompetitive practices with adverse affects against Sun and its Java programming language. Six week ago, America Online filed a similar suit against Microsoft regarding its Netscape Web browser; Be, Inc. has also filed suit against Microsoft. Such private lawsuits have been expected since a U.S. appeals court upheld that Microsoft was a monopolist and violated federal antitrust laws.