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Tonya Skinner: The Wide World of Applets
This page give a nice definition of Java applets and two examples of an applet. Download the files and try it yourself!
Rice University
Teach Java 2005
A collection of documents and software resources for the Java program developer.
Other
Hot Scripts: Java
This resource presents an internet directory of resources for Java programmers.
Other
Ntnu Virtual Physics Lab: Thick Lens Java Applet
An interactive Java applet which allows the user to investigate the path of light through a lens shape object. The shape of the object, the index of refraction of the material, and the location of the incident rays can be altered.
Washington State University
Washington State University: Estimate the Area Under a Curve
You can have a good time with this java applet that lets you place adjustable shapes under a curve and then sums the areas to approximate the area of the curve.