FOSE 2004 - WASHINGTON, DC -- March 23, 2004 -- Sun Microsystems, Inc. (Nasdaq: SUNW) announced today that the U.S. Navy's Program Executive Office for Command, Control, Computer, Communications, Intelligence and Space (PEO C4I and Space) has selected the Sun Java System Application Server Standard Edition 7 to run all Global Command and Control - Maritime (GCCS-M) deployments beginning in fiscal year 2005. Ultimately, more than 200 naval vessels are scheduled to be fitted with the server during a four-year installation period.

The Sun Java System Application Server Standard Edition 7 will run on the Solaris 9 Operating System and be deployed on UltraSPARC[R] technology. It was selected over competitor products because of Sun's adherence to the Java 2 Platform, Enterprise Edition (J2EE platform) specifications and its commitment to security. The Solaris 9 Operating System and the Sun Java System Application Server Standard Edition 7 have been submitted for Common Criteria Certification.

"Sun Microsystems, Inc., meets our GCCS requirement and provides the warfighter with a standards-based product that possesses a high degree of security. Sun offered us the best value based on our requirements," said Captain Will Rodriguez, Program Manager for the Navy's Command and Control Systems.

"Sun has a very strong relationship with the US Navy," said Thomas Kreidler, vice president, Government Division, Sun Microsystems, Inc. "Our commitment to the Navy's success is once again demonstrated by our focus on delivering value-added solutions that are standards based, secure and cost effective."

About Sun Microsystems, Inc.

Since its inception in 1982, a singular vision -- "The Network Is The Computer" -- has propelled Sun Microsystems, Inc. (Nasdaq: SUNW) to its position as a leading provider of industrial-strength hardware, software and services that make the Net work. Sun can be found in more than 100 countries and on the World Wide Web at http://sun.com

Sun, Sun Microsystems, the Sun logo, Java, J2EE, Solaris, and The Network Is The Computer are trademarks or registered trademarks of Sun Microsystems, Inc. in the United States and other countries.

All SPARC trademarks are used under license and are trademarks or registered trademarks of SPARC International, Inc. in the US and other countries. Products bearing SPARC trademarks are based upon an architecture developed by Sun Microsystems, Inc.