JAVA - Java is a network-orientated programming language that is specifically designed for writing programs that can be safely downloaded to your computer through the Internet and immediately run without fear of viruses or other harm to your computer or files. Using small Java programs (called “Applets”), Web pages can include functions such as animations, calculators, and other fancy tricks.

JS or Javascript - JavaScript is a programming language that is mostly used in web pages, usually to add features that make the web page more interactive. When JavaScript is included in an HTML file it relies upon the browser to interpret the JavaScript. When JavaScript is combined with Cascading Style Sheets (CSS), and later versions of HTML (4.0 and later) the result is often called DHTML.

JPG or JPEG (Joint Photograhic Experts Group) - a common image format. Most of the images you see embedded into Web pages are GIFs, but sometimes, especially in art or photographic Web sites, you can click on the image to bring up a higher resolution (larger) JPEG version of the same image.

Jukebox - A machine that holds and plays CDs, vinyl records, videodisks, tape cartridges, or CD-ROMs. The jukebox automatically picks up disk or tape the user has selected, and moves it to the drive to be played. This may also refer to a software program designed to play music media files like cdrom songs or music.

Justification - Alignment of text on both left and right margins, except for last lines of paragraphs, which are flush left, and paragraph indents if used.