Computers use many special words. These words help us understand how computers work and what they can do. Below is a comprehensive list of computer-related ‘J’ words, along with short descriptions. It helps you build your tech vocabulary.
Computer Terms that start with the Letter J
Here is the list of Computer words that begin with J with Meaning:
| Word | Description |
| Java | A popular object-oriented programming language |
| JavaScript | A high-level, interpreted programming language |
| JPEG | Joint Photographic Experts Group; a common image file format |
| JSON | JavaScript Object Notation; a lightweight data interchange format |
| JVM | Java Virtual Machine; an execution environment for Java bytecode |
| JIT | Just-In-Time compilation; a method to improve runtime performance |
| JAR | Java Archive; a package file format typically used to aggregate Java class files |
| JDBC | Java Database Connectivity; an API for connecting Java to databases |
| JSP | JavaServer Pages; a technology for developing web pages with Java |
| JRE | Java Runtime Environment; software package for running Java applications |
| jQuery | A fast, small, and feature-rich JavaScript library |
| JBOD | Just a Bunch Of Disks; a storage system using multiple hard drives |
| Jitter | Unwanted variation of one or more signal characteristics in electronics and telecommunications |
| Joystick | An input device consisting of a stick that pivots on a base |
| JTAG | Joint Test Action Group; an industry standard for verifying designs and testing printed circuit boards |
| JNDI | Java Naming and Directory Interface; an API for directory services |
| JCL | Job Control Language; a scripting language used on IBM mainframe operating systems |
| Jumper | A short wire used to close, open or bypass part of an electronic circuit |
| Jupyter | An open-source web application for creating and sharing documents containing live code |
| Joomla | A free and open-source content management system |
| JFS | Journaled File System; a file system technology created by IBM |
| Jaggies | Aliasing in computer graphics that causes stair-like lines |
| Java Beans | Reusable software components for Java |
| JavaScript Engine | A program or interpreter that executes JavaScript code |
| Jailbreak | The process of removing software restrictions imposed by iOS |
| J2EE | Java 2 Platform, Enterprise Edition; a set of specifications for enterprise Java |
| Jabber | An open technology for real-time communication |
| Jammming | Deliberate interference with wireless communications |
| JDK | Java Development Kit; a software development environment for Java |
| Jetpack | A plugin that supercharges WordPress sites with powerful features |
| JPEG 2000 | An image compression standard and coding system |
| Jumbo Frame | An Ethernet frame with more than 1500 bytes of payload |
| Junction | In NTFS, a type of reparse point that acts as a symbolic link to a directory |
| Julia | A high-level dynamic programming language designed for high-performance numerical analysis |
| JScript | Microsoft’s implementation of the ECMAScript specification |
| Job | A unit of work or execution in a computer system |
| Join | An SQL clause to combine rows from two or more tables |
| JSAPI | JavaScript API; a set of JavaScript functions for web development |
| JSF | JavaServer Faces; a Java specification for building component-based user interfaces for web applications |
| JSX | JavaScript XML; a syntax extension for JavaScript often used with React |
| JUnit | A unit testing framework for Java programming language |
| Jumbo Packet | A network packet that exceeds the standard Ethernet frame size |
| Jupyter Notebook | An open-source web application for creating and sharing documents with live code |
| Just-in-Time | Jamming |
| Jukebox | A large-capacity optical disk storage device |
| JetDirect | HP’s technology for network-connected printers |
| Jaz Drive | A discontinued removable disk storage system |
| Jpeg Artifact | Visual distortion caused by JPEG compression |
| Jog Dial | A type of rotary electrical switch often used for menu navigation |
| Justify | To align text evenly along the left and right margins |
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