• Java applets are used to provide interactive features to web applications and can be executed by browsers for many platforms. They are small, portable Java programs embedded in HTML pages and can run automatically when the pages are viewed.
  • JavaScript is a scripting language used for client-side web development. It is used in millions of webpages to add functionality, validate forms and detect browsers.
  • Joke programs are considered relatively harmless and are often designed to annoy or make fun of users. They do not infect files, cause damage, or spread to other systems.