J

J is for Java

J2EE (Java 2 Platform, Enterprise Edition): Combines a number of technologies in one architecture with a comprehensive Application Programming Model and Compatibility Test Suite for building enterprise-class server-side applications. See also Java.

J2ME (Java 2 Platform, Micro Edition): A highly optimized Java runtime environment targeting a wide range of consumer products, including pagers, cellular phones, screen-phones, digital set-top boxes and car navigation systems.

J2SE (Java 2 Platform, Standard Edition): The essential Java 2 SDK, tools, runtimes, and APIs for developers writing, deploying, and running applets and applications in the Java programming language. Also includes earlier Java Development Kit versions JDK^TM 1.1 and JRE 1.1. See also Java.

JANET (Joint Academic Network): The academic and research network in the United Kingdom.

Java: A programming language created by Sun Microsystems.  It is similar to C++ (C++ without the "fangs"), but is capable of running on any computer regardless of the operating system using a Java interpreter. A web browser includes a Java interpreter.

JavaScript: A programming language, similar to Java although not the same. It is easier to write in than Java since it does not require any special software to create the script. The script can be embedded in html documents, providing dynamic web pages. JavaScript.com The JavaScript Source. See also VBScript. 

JDBC (Java DataBase Connectivity): Provides programmers with a uniform interface to a wide range of relational databases, and provides a common base on which higher-level tools and interfaces can be built. JDBC is similar to ODBC, but is designed specifically for Java programs, whereas ODBC is language-independent. A JDBC-ODBC Bridge is available and part of J2SE. Developed by Sun. See also J2EE.

JDK (Java Development Kit): see J2SE.

Jitter: The slight movement of a transmission signal in time or phase; jitter can introduce errors and cause the loss of synchronization in high-speed synchronous communications.

JMS (Java Message Service): The Java Message Service specification provides developers with a standard Java API for enterprise messaging services such as reliable queuing, publish and subscribe communication and various aspects of push/pull technologies. See also J2EE.

JNDI (Java Naming and Directory Interface): Provides uniform, industry-standard, seamless connectivity from the Java platform to business information assets, thus allowing developers to deliver Java applications with unified access to multiple naming and directory services across the enterprise. See also J2EE.

JPEG: Joint Photographic Experts Group. The name a group of experts nominated by national standards bodies and major companies to work to produce standards for continuous tone image coding. The 'joint' refers to its status as a committee working on both ISO and ITU-T standards. The 'official' title of the committee is ISO/IEC JTC1 SC29 Working Group 1, and is responsible for both JPEG and JBIG standards. The best known standard from JPEG is IS 10918 (ITU-T T.81), which is the first of a multi-part set of standards for still image compression. A basic version of the many features of this standard, in association with a file format placed into the public domain by C-Cube Microsystems (JFIF) is what most people think of as JPEG. JPEG is one of the 2 main image formats used on the Web, the other one is GIF.

Jscript: Microsoft scripting language. Conforms with ECMAScript. Microsoft Scripting Technologies: JScript

JSP (JavaServer Pages): JSP technology allows web developers and designers to rapidly develop and easily maintain, information-rich, dynamic web pages that leverage existing business systems. As part of the Java^TM family, JSP technology enables rapid development of web-based applications that are platform independent. JSP technology separates the user interface from content generation enabling designers to change the overall page layout without altering the underlying dynamic content. JSP technology uses XML-like tags and scriptlets written in the Java programming language to encapsulate the logic that generates the content for the page. See also J2EE.

JTA (Java Transaction API): While J2EE provides transaction support automatically, the Java Transaction API (JTA) provides a way for J2EE components and clients to manage their own transactions and for multiple components to participate in a single transaction. See also J2EE.

JTS (Java Transaction Service): The Java Transaction Service (JTS) API technology ensures interoperability with sophisticated transaction resources such as transactional application programs, resource managers, transaction processing monitors and transaction managers. Since these components are provided by different vendors, JTS provides open, standard access to these transaction resources. See also J2EE.