What java interactive development environment solutions are available?

Interactive TV is often described as "lean back" interaction, as users are typically relaxing in the living room environment with a remote control in one hand. This is in contrast to the personal computer-oriented "lean forward" experience of a keyboard, mouse and monitor. In the case of "two-screen" Interactive TV, however, there may be a mix of "lean-back" and "lean-forward" interaction. There has been a growing proclivity to media multitasking, in which multiple media devices are used simultaneously (especially among younger viewers). This has increased interest in two-screen services, and is creating a new level of multitasking in interactive TV known as "coactive TV."