Codename One is an SDK launched by former Sun employees that allow developers to create a single native mobile app for multiple platforms (iOS/Android/Windows Phone, etc.) using Java and an optional GUI builder:

“Ex-Sun employees did what Sun/Oracle failed to do since the iPhone launched. They brought Java to iOS and other mobile devices. They are getting major coverage from Forbes, DDJ,hacker news and others. They are taking a unique approach of combining a Swing-like API with a open source and SaaS based solution.”

In other Apple Java news, a recent Apple job listing is looking for a Senior Java Engineer to join the Siri Server Platform team. Candidates should have experience in Java API design and will “lead and extend the core software infrastructure, algorithms, and APIs that let Siri move, understand, plan, learn, speak, and remember.” Like most huge Server Side Applications, Siri’s backend appears to be Java-based.