Java and iPhone
Sun has started with bringing J2me to the iPhone and iPod Touch. Sun also announced that if proven popular, Java FX and J2se will also be prepared for launch on Apple's devices. Sun will make as much iPhone and iPod touch functionalities available in their Java virtual machines.
The J2me virtual machine will not come standard with future firmware updates of the devices. Consumers have to get it installed through the new Apple App Store which will be introduced with the 2.0 firmware.
source: Mobile Games Blog