Selected Examples

Distribution Mechanisms

Examples in this section have been selected to demonstrate the capabilities of Ejs modeling.  Many of these models are posted as applets for easy access, but this is not the only way to distribute an Ejs model.  Ejs models can be distributed as:

• a ready-to-use Java application packaged in a jar file,
• part of a collection of Java applications packaged in a single Launcher jar file,
• a Java applet embedded in a web page,
• an xml file that can be open in Ejs.

Each distribution mechanism has advantages and disadvantages. 

• Single model jar files are easy to distribute but each jar file contains the entire Ejs library.
• Multiple models in a self-contained Launcher package share the core Ejs library but the entire package (jar file) may be large because it contains unwanted models and curricular material. 
• Applets are easy to access on the Internet but applet distribution is error prone because multiple files are required and these files must be in the correct relative directory structure.
• An xml description of the model is small but cannot be run without Ejs. 

Use the distribution mechanism that fits your needs.

Distribution License

The Ejs models on this website are free; permission to use, copy, modify, and distribute these modules is freely granted, provided that copyright notices and author credits are preserved.  The copyright and author credits are embedded in model's xml description.