BT glossary - J

This glossary is here to help you understand some of the acronyms you may encounter in this site. Select a letter below that your word begins with.

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Abbreviation Term Definition


A high level programming language, developed by Sun Microsystems. Compiled Java code can run on most computers because Java interpreters and run time environments, known as Java virtual machines (VMs), exist for most operating systems, including UNIX, Macintosh OS , and Windows.



JavaScript is a client-side, world-wide web scripting language originally developed by Netscape, which should not be confused with Java since they have nothing in common. JavaScript exploits have been responsible for a number of embarrassing attacks.


Joint Academic Network

The network that links computers at universities across the UK. Based on an X.25 network, it links all major sites. See also SuperJANET.