The following terms starting with the letter "J" have specific pages dedicated to them. You can come back to this page or the main Computer Terms page by using the navigation breadcrumbs at the bottom of each page.

• JBIG = Joint Bi-level Image Experts Group
• JCL = Job Control Language
• JDBC = Java Database Connectivity
• JDK = Java Developers (Development) Kit
• JEIDA = Japan Electronic Industry Development Association
• JFIF = JPEG File Interchange Format
• Joe Job = Use of a fake return address in a spam message
• JOVIAL = Jules' Own Version of the International Algebraic Language
• JPEG = Joint Photographic Experts Group
• Jump Line = A continuation link for split articles