Sun Microsystems has become the latest litigant to bring antitrust charges against Microsoft, in a case that opened this week.
Sun's claim is that Microsoft wants to control portable devices just as it already does personal computers.
Microsoft's new .Net enables a variety of internet-based interactions and is designed to compete with Sun's Java.
According to The Washington Post, Sun has asked a federal judge in Baltimore to temporarily force Microsoft to include its Java software code in all copies of Windows, because its suit for damages could take years to resolve.
Sun wants to stop .Net being bundled with Windows, as this will put it on about 90 per cent of the world's personal computers, giving the Redmond giant a de facto monopoly.
Microsoft has countered that Sun is seeking a free ride on the back of its success, and said that Sun is free to cut deals with computer manufacturers to have them pre-install Java on new computers.
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