Users have reacted sceptically to Oracle's assurances on the future of Java. Oracle CEO, Larry Ellison, appeared at the JavaOne conference, the annual Java technical event staged by Sun Microsystems last week to offer assurances to the Java community that Oracle, which is buying Sun, was among them as adherents to the Java platform.

"We see increased investments in Java coming from the Sun-Oracle combination and an expansion of the overall community, and we're very excited about that," Ellison said. However, he remained largely silent about the fate of specific Sun products and conference attendees failed to get any assurances that the JavaOne event itself would be continued.

Sun's prized status as a place of cultural innovation now is in question, said Miko Matsumura, chief software strategist at Software AG, which occasionally competes with Oracle in the database market. "I think people right now are broadly questioning [Ellison's] commitment to I guess [what] I would call the inventive culture that Sun has fostered for so many years," he adds.

"I think there's a lot of things that are a bit regrettable about [the merger], but one [is that] ... it's kind of a reach for them be going out into systems," he says, since Oracle has not been a hardware company before.

Another attendee, Kurt Zoglmann, a systems analyst at Kansas State University, said the merger presents opportunities but also puts doubts in people's minds. "The opportunity is there for some vertical integration for the two companies to be more efficient as a whole," with the ability to package Sun technologies with the complete Oracle database, he says.

The doubts, though, concern the fate of the Sparc architecture, Zoglmann says: "Is it something that is viable in the long term?" He points out that "a lot of people have spent tons of money on it." - Ellison has already stated intentions to keep Sun's hardware business - But Zoglmann was not concerned about Oracle's commitment to open source software, which has been a staple of Sun's software strategy in recent years.

Another attendee, Stephen Staeheli, a developer at the Basler Versicherungen insurance company in Switzerland, cited the fate of GlassFish as a concern. Oracle has three different application server technologies now, with its own application server, the WebLogic server it acquired when it bought BEA, and now GlassFish. "Unfortunately, the one that is free [GlassFish] is the best," Staeheil says. "I wonder if it'll stay free."

Although his company now uses Sun's Solaris OS, Staeheli says Basler was moving to AMD and probably Linux anyway. "It's just a matter of costs."

Software engineer Robert Nowak raised concerns about the continued availability of source code and other downloadable software: "I'm just a little bit worried."

Meanwhile, attendee Serge Liberloo, owner of the Jscoop Java service consultancy, is hopeful that commitments to Java expressed at the conference would be kept. But Liberloo notes not a lot of information had been offered at this point.

"I hope that everything they promised will be true and that Java and all the technologies around Java will remain as they are today because we are happy about the way that they were working in open source," Liberloo said.