Definitions: J

What is Java?
Java is a programming language used to create complete applications or small application modules or applets for use as part of a Web page.
What is JavaScript?
JavaScript is a popular programming language used to do such things as automatically change a formatted date on a Web page, or cause a page to appear in a pop-up window.
What is JPEG?
JPEG (Joint Photographic Experts Group) or JPG is commonly used file format for graphic images on the Web. Others include GIF and PNG. JPEGs are typically photographic images. Files in this format end in '.jpg'.