By most accounts, upgrades to Apple's Leopard OS are going smoothly. Some users are reporting disappointment, however, that Flash isn't working correctly; and the much anticipated Java 1.6 is missing. While these two issues won't adversely affect most users, for those who depend on Java and Flash, it's more than just a nuisance. Fortunately, it may be a short-lived one.

Attendees at Apple's Worldwide Developers Conference earlier this year were excited by confirmation that Java would be bundled with Leopard. There were, however, inherent questions about which version of Java would actually be included. By design, Java 6.0 doesn't easily support Mac OS X Tiger or earlier versions of Apple's operating systems. Unfortunately, many users felt that Java 1.5 lacks the juice today's developers need.

Java 1.6 is already available for Linux and Windows users, so when a developer preview Java for Mac OS X appeared and, better yet, worked on Leopard, developers were overjoyed. Disappointment was nearly instantaneous when it was discovered that Apple had chosen to bundle Java 1.5 with Leopard instead.

The move was likely designed to include backward compatibility among OS X versions and ensure that Java was available on both Intel and PPC-based Macs. That's not doing much to assuage enterprise users hoping to benefit from increased system performance and developers who were looking forward to additional functionality.

"The number one things users see by upgrading [to Java 6] is that applications run much faster," says a spokesperson for Sun Microsystems, the creators of Java. "Everything's just speedier."

So when will Apple users see Java 1.6? Sun "We can't comment on the timeline because that's not an operating system that we have a relationship with," she says.

Apple representatives could not be reached for comment.

Among the disappointed is Wilhelm Fitzpatrick, enterprise Java developer and consultant, who says he is "frustrated that Apple has decided to make Mac OS X increasingly irrelevant as an enterprise development platform."

Fitzpatrick notes that the Java developer community has been itching for the 1.6 upgrade for quite a while. "Java 6 has been out in general availability for nearly a year at this point, and Apple did tease developers with a Java 6 preview early last year that made it look like they were not going to suffer from there usual abysmal lag time in delivering new versions of Java. Sadly at that point they went dead silent on the issue."