Abstract : Traditional real-time operating system vendors have recently started to consider Java as a potential platform in real-time operating system products and embedded solutions. Specification status and implementation towards an industry standard application-programming interface are split between two consortiums striving to introduce different paradigms of Java integration with real-time (RT) services. This paper provides a background and understanding of the direction of real-time Java in the commercial market place and includes status information about the specifications. In addition, a preliminary review of a few of the products with respect to timing jitter and priority issues are examined.