| J++ |
Also known as Visual J++, this is a Windows-based Java development system that's used to create Java applications that can run on any platform.
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| J2EE |
Java 2 Platform, Enterprise Edition: a platform from Sun for building distributed enterprise applications by performing services in the middle tier between the user's machine and the enterprise's databases and legacy systems.
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| jack |
A connector into which a plug is inserted.
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| jack in |
To enter a virtual reality simulation by means of a computer. A term which comes from cyberpunk science fiction and originally referred to plugging in electrodes to interface the brain directly with a virtual reality.
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| jack out |
To leave a virtual reality simulation; the opposite of jack in.
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| jacket |
The plastic covering that protects a floppy disk.
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| JAD |
Joint application development is a RAD (Rapid Application Development) concept, which involves cooperation between the designer of a computer system and the end user to develop a system that exactly meets the user's needs.
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| Jade |
A freely-available DSSSL engine developed by James Clark. It is a fast C++ based processor that is available for Win32 and UNIX platforms.
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| jaggies |
The jagged edges that appear in graphics on diagonal or curved lines. The stair-step appearance is the result of trying to build a diagonal or curved line out of little squares. One solution is to create the image in a large format and reduce it to the desired size, so the pixels are smaller in relation to the image. Another solution is anti-aliasing, which means putting pixels along the jagged edge which are of an intermediate color between the background and the image. This makes the line look smoother.
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| JANET |
Joint Academic Network. A university network in the United Kingdom, renamed "Super-JANET" after it upgraded to higher speed links.
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| Japanese Electronic Industry Development |
(JEIDA). A Japanese standards organization.
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| jargon |
The specialized or technical language of a trade; for example, computerese.
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| Jargon File, The |
The Jargon File. A large online collection with definitions of hacker and computing terms (http://beast.cc.emory.edu/Jargon30/JARGON.HTML).
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| Java |
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| Java 2 |
A version of the programming language Java. The files are formated in byte code, and the language runs on most computers. Java is very important for exploring the World Wide Web. See also Java.
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| Java applet |
A little application written in Java language which can be embedded in an HTML document. On the World Wide Web, Java applets can be executed by Netscape Navigator or Sun's HotJava browser.
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| Java Development Kit |
(JDK). A software development kit from JavaSoft, for producing Java programs.
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| Java Virtual Machine |
(JVM). A virtual machine is a simulated computer; it runs on a host computer but behaves as if it is a separate computer. The Java Virtual Machine works as a self-contained operating environment to run Java applets, with the advantage that Java applets can be run independently from the host operating system.
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| JavaScript |
A cross-platform WWW scripting language from Netscape Communications, very popular because it is simple and easy to learn. It can be included in an HTML file by using the tag <script language="JavaScript">.
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| JavaSoft |
The division of Sun Microsystems that works with Java technology.
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| Jaz drive |
A compact, removable-cartridge disk drive made by Iomega Corporation. A 540MB and a 1GB cartridge are available.
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| JBIG |
Joint Bi-level Image Experts Group. A group formed by ISO, IEC, and ITU-T for creating a lossless compression standard for images. JBIG compression is highly efficient and gives high-quality images with no loss of data from compression and decompression. It can be used with text, line art, and halftones.
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| JCL |
Job Control Language. A command language for mainframes and minicomputers, used for launching applications.
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| JDK |
Java Development Kit. A software development kit from JavaSoft, for producing Java programs.
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| JEDEC |
Joint Electronic Device Engineering Council. An international organization that sets standards for integrated circuits.
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