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The Java language has undergone several changes since JDK 1.0 as well as numerous additions of classes and packages to the standard library.Since J2SE 1.4, the evolution of the Java language has been governed by the Java Community Process (JCP), which uses Java Specification Requests (JSRs) to propose and specify additions and changes to the Java platform.
JSR 59 was the umbrella specification for J2SE 1.4 and JSR 176 specified J2SE 5.0 (Tiger). Java SE 6 (Mustang) was released under JSR 270. Java Platform, Enterprise Edition (Java EE) is a related specification that includes all the classes in Java SE, plus a number that are more useful to programs that run on servers as opposed to workstations.
The Java platform is a suite of programs that facilitate developing and running programs written in the Java programming language. A Java platform includes an execution engine (called a virtual machine), a compiler and a set of libraries; there may also be additional servers and alternative libraries that depend on the requirements.
JDK 1.1.6: First just-in-time compilation (Symantec's JIT-compiler) [2] [22] J2SE 1.2: Use of a generational collector. J2SE 1.3: Just-in-time compiling by HotSpot. J2SE 1.4: See here, for a Sun overview of performance improvements between 1.3 and 1.4 versions. Java SE 5.0: Class data sharing [23] Java SE 6: Split bytecode verification
J2SE 1.4: 48: 13th February 2002: October 2008 — J2SE 5.0 (1.5) 49: 30th September 2004: October 2009 — Java SE 6 (1.6) 50: 11th December 2006: April 2013 for Oracle December 2018 for Azul [3] December 2016 for Red Hat [4] October 2018 for Oracle [5] December 2027 for Azul [3]
Sun introduced version 1.0 of Web Start in March 2001, [5] while 64-bit Windows support was added only in Java 6 [6] (later than 64-bit Java was first available). Since J2SE 1.4 Web Start comes as a default part of Java Runtime Environment (JRE) called javaws , computer administrators no longer have to install it separately.
Jakarta EE, formerly Java Platform, Enterprise Edition (Java EE) and Java 2 Platform, Enterprise Edition (J2EE), is a set of specifications, extending Java SE [1] with specifications for enterprise features such as distributed computing and web services. [2]
Java Platform, Micro Edition or Java ME is a computing platform for development and deployment of portable code for embedded and mobile devices (micro-controllers, sensors, gateways, mobile phones, personal digital assistants, TV set-top boxes, printers). [1]