Java Demonstrations of Neural Net Concepts
The Computation and Neural Networks Laboratory has developedJava demonstrations of neural net concepts.
Neural Networks Java Applets

 2 Dimensional Linear Dynamical Systems (CNNL) (Check below for a more general applet)
 Perceptron Learning Rule (CNNL)
 Principal Component Extraction via Various HebbianType Rules (CNNL)
 Clustering via Simple Competitive Learning (CNNL)
 SOM: SelfOrganizing Maps (Supports various methods & data distributiuons; authored by H.S. Loos & B. Fritzke)
 Traveling Salesman Problem (TSP) via SOM (authored by O. Schlueter)
 Backprop Trained Multilayer Perceptron for Function Approximation (CNNL) (Demonstrates generalization effects of early stoping of training)
 Neural Nets for Control: The Ball Balancing Problem (CNNL)
 Backprop Trained Multilayer Perceptron Handwriting Recognizer (by Bob Mitchell)
 Image Compression Using Backprop (CNNL)
 Generalizations of the Hamming Associative Memory (CNNL)
 Associative Memory Analysis Demo (Applet written and maintained by David Clark; Algorithms were developed in the CNNL)
 Support Vector Machine (SVM) (by Lucent Technologies)
Here is a note on Dr. Hassoun's PhD dissertation which included polynomialtype "SVM" ....  The Extreme Point Machine (EPM)
Other Sites with Relevent Java Demos
 Collection of Applets for Neural Networks and Artificial Life
 Genetic Algorithm (GA) Demo (by Marshall C. Ramsey)
 Trailer Truck Backup Demo: Fuzzy Rule_Based Approach (by Christopher Britton)
Useful Java Applets for Engineers!

 Mathtools.net: The Technical Solutions Portal
 OnLine Graphic Calculator and Solver
 Fourier Series Construction of Waves
 Solution of a 2D system of autonomous differential equations
Major Java Applet Collections (with search capabilities)

 Digital Cat's Java Resource Center
 Developer.com Java Resource Center
 JARS.com: Rated Java Applets