"Java 2 Platform, Micro Edition" - J2ME (also known as "K Java" from Sun Microsystems) is a technology that employs the Java programming language to create applications specifically designed for mobile devices.

Jitter, in the context of wireless (and wired) data networking, is the variation in the amount of time that it takes data packets (Voice-over-WLAN packets, for example) to traverse the network and arrive at a destination. Jitter of less than roughly 100 milliseconds can often be accommodated with configuration changes but, beyond 100 ms, conversational problems can be expected in a VoIP wireless connection. Jitter measurement is available from VoIP equipment and through the use of a VoIP network protocol analyzer.