consist of more than text and graphics -- they also often contain little programs
that scroll text, display graphics, calculate results, and perform other actions.
These programs are sometimes called "applets" as a diminutive of "applications".
The most common applets are Java programs
/ ECMAScript scripts.
These applets are written in compact, text-based computer languages, so they
take up little bandwidth and are downloaded very quickly, making them ideal
for adding sophisticated
custom functionality to a web page that may be accessed over low bandwidth connections.
-- you can view some
of the code by selecting "View / Source" from your browser menu. Java
programs may be downloaded with a web page, or downloaded quickly when the user
performs an action that specifically requires it.
Applets run on a software engine
in your web browser or on your computer called a "virtual machine".
systems include a virtual machine for Java.
You can sometimes tell when
an applet is running when a message is displayed in the browser border saying
something like: "Applet ThisApplet running".
The official Sun
Java site provides the central resource for information on Java.