What is the Real-Time Specification for Java?
RTJ is constructed so that one can provide real-time support for the full Java 2 Platform (J2SE/J2EE) as well as for PersonalJava, EmbeddedJava, and CLDC/KVM-based devices so long as the devices have a Real Time Operating System (RTOS) which supports certain requirements called out in the RTJ specs.
The RTJ expert group was charted as the first Java Specification Request (JSR) operating under the Java Community Process. IBM made the original proposal and acts as the specification lead. (Sun is a participant like all of the other expert group companies, though Sun's rep does happen to be James Gosling.) Read the original JSR at: