Java programming language which was designed for use with the Java Platform. Programming languages are typically outside of the scope of the phrase "platform", although the Java programming language is listed as a core part of the Java platform. The language and runtime are therefore commonly considered a single unit.
Java ME (Micro Edition): Specifies several different sets of libraries (known as profiles) for devices which are sufficiently limited that supplying the full set of Java libraries would take up unacceptably large amounts of storage.
Java SE (Standard Edition): For general purpose use on desktop PCs, servers and similar devices.
Java EE (Enterprise Edition): Java SE plus various APIs useful for multi-tier client-server enterprise applications.