Summary: Sun's biggest announcement at JavaOne 2007 was its renewed interest in the client and, specifically, a client-side framework the company dubbed JavaFX. Obligatory keynote demos notwithstanding, many conference attendees were buffled just what JavaFX meant. In this interview with Artima, Jacob Lehrbaum, Sun's client systems group product line manager, describes the mobile version of JavaFX, and provides the big picture of where JavaFX fits in with other client-side Java technologies.