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JAIN
See Java APIs for Integrated Networks (JAIN).

JAR
JAR (Java Archive) is a platform-independent file format that aggregates many files into one. Multiple applets written in the Java programming language, and their requisite components (.class files, images, sounds and other resource files) can be bundled in a JAR file and subsequently downloaded to a browser in a single HTTP transaction. It also supports file compression and digital signatures.

Java
Sun's trademark for a set of technologies for creating and safely running software programs in both stand-alone and networked environments.

Java 2 Platform
The second generation of the Java platform. (The first generation was the JDK.) Also see "Java Platform" and "JavaPlatform Editions"

Java 2 Platform, Enterprise Edition (J2EE platform)
See Java 2 Platform, Enterprise Edition, under Java Platform Editions.

Java 2 Platform, Micro Edition (J2ME platform)
See Java 2 Platform, Micro Edition, under Java Platform Editions.

Java 2 Platform, Standard Edition (J2SE platform)
See Java 2 Platform, Standard Edition, under Java Platform Editions.

Java 2 SDK, Standard Edition
The Software Development Kit (SDK) is development environment for building applications, applets, and components using the Java programming language. This SDK provides a reference implementation of the J2SE platform.

Java APIs for Integrated Networks (JAIN)
enables the rapid development of Next Generation telecom products and services on the Java platform.

Java Card API
An ISO 7816-4 compliant application environment focused on smart cards.

Java Compatibility Kit (JCK)
A test suite, a set of tools, and other requirements used to certify a Java platform implementation conformant both to the applicable Java platform specifications and to Java Software reference implementations.

Java Database Connectivity (JDBC)
An industry standard for database-independent connectivity between the Java platform and a wide range of databases. The JDBC provides a call-level API for SQL-based database access.

Java Development Kit (JDK)
A software development environment for writing applets and applications in the Java programming language. Technically, the JDK is the correct name for all versions of the Java platform from 1.0 to 1.1.x.

Java Foundation Classes (JFC)
An extension that adds graphical user interface class libraries to the Abstract Windowing Toolkit (AWT).

Java IDL
See Java Interface Definition Language.

Java Interface Definition Language (IDL)
A set of Java APIs that provide CORBA (Common Object Request Broker Architecture) interoperability and connectivity capabilities for the J2EE platform. These capabilities enable J2EE applications to invoke operations on remote network services using the OMG IDL and IIOP.

Java Media APIs
A set of APIs that support the integration of audio and video clips, 2D fonts, graphics, and images as well as 3D models and telephony.

Java Media Framework
The core framework supports clocks for synchronizing between different media (e.g., audio and video output). The standard extension framework allows users to do full audio and video streaming.

Java Naming and Directory Interface (JNDI)
A set of APIs that assists with the interfacing to multiple naming and directory services.

Java Native Interface
A standard programming interface for writing Java native methods and embedding the JVM into native applications. The primary goal is binary compatibility of native method libraries across all JVM implementations on a given platform.

Java Platform
Consists of class libraries, a Java virtual machine (JVM) and class loader (which comprise the runtime environment) and a compiler, debugger and other tools (which comprise the development kit).
In addition, the runtime platform is subject to a set of compatibility requirements to ensure consistent and compatible implementations. Implementations that meet the compatibility requirements may qualify for Sun's targeted compatibility brands.
Java 2 is the current generation of the Java Platform.

Java Platform Editions
A Java platform "edition" is a definitive and agreed-upon version of the Java platform that provides the functionality needed over a broad market segment.

An edition is comprised of two kinds of API sets: (i) "core packages," which are essential to all implementations of a given platform edition, and (ii) "optional packages," which are available for a given platform edition and which may be supported in a compatible implementation.

There are 3 distinct editions of the Java Platform:
 

* Java 2 Platform, Enterprise Edition:
The edition of the Java platform that is targeted at enterprises to enable development, deployment, and management of multi-tier server-centric applications.

* Java 2 Platform, Micro Edition:
The edition of the Java platform that is targeted at small, standalone or connectable consumer and embedded devices to enable development, deployment, and management of applications that can scale from smart cards through mobile devices and set-top boxes to conventional computing devices.

* Java 2 Platform, Standard Edition:
The edition of the Java platform that enables development, deployment, and management of cross-platform, general-purpose applications.

Java Remote Method Invocation (RMI)
A distributed object model for Java program to Java program, in which the methods of remote objects written in the Java programming language can be invoked from other Java virtual machines, possibly on different hosts.

Java Runtime Environment (JRE)
A subset of the Java Development Kit (JDK) for end-users and developers who want to redistribute the runtime environment alone. The Java runtime environment consists of the Java virtual machine, the Java core classes, and supporting files.