The Basics of J2ME | Developer
Micro Edition (J2ME): Designed for devices with limited memory, display and processing power. Note: In December of 1998, Sun introduced the name "Java 2" (J2) to coincide with the release of Java 1.2.This new naming convention applies to all editions of Java, Standard Edition (J2SE), Enterprise Edition (J2EE), and Micro Edition (J2ME).