SAN FRANCISCO -- JavaOne(SM) Developer Conference -- June 29, 2005 -- Sun Microsystems, Inc. (NASDAQ: SUNW), founder and lead advocate for Java technology, today announced an agreement with NTT DoCoMo, Japan's largest mobile operator, to deliver a next-generation mobile data services platform based on open-standard Java technology. Codenamed * Project (Star Project), this collaboration extends the two companies' successful ongoing relationship to deliver the development tools and a secure, feature-rich Java technology-based environment that will help deliver on DoCoMo's mission to enrich consumers' lifestyles and bring people closer together.

The * Project harnesses DoCoMo and Sun's expertise in enabling and deploying mass-market, Java technology-based mobile data services. Together, having successfully kick-started mobile entertainment and mobile commerce services, the companies are now collaborating on the next platform evolution that will help enable the kind of innovative and secure mobile data services that are beyond the capabilities of DoCoMo's current platform.

"Java technology has played a significant role in improving mobile data services in Japan and around the world," said Alan Brenner, vice president, Client Systems Group, Sun Microsystems Inc. "Sun's relationship with DoCoMo advances Java technology's ability to empower consumers and enterprise organizations by delivering exciting new services and information directly into their hands."

"DoCoMo is pleased to extend its relationship with Sun. Not only does Sun's vision for the connected society and access to ubiquitous services match our own, but Sun has the technical know-how to help us translate that vision into reality," said Takeshi Natsuno, senior vice president, Multimedia Services.

Today, 56 percent of Japan's mobile phone subscribers use DoCoMo's network and services. DoCoMo will continue to capitalize on its success in providing consumers ubiquitous Internet access and market-leading 3G content by offering a new, evolving suite of mobile solutions and services that complement, enrich and simplify consumers' daily lives.

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