At minimum, you need to download the Ejs bundle. If your system does not have Java installed, you will also have to download the installation package for the Java Runtime Environment.
- The distribution file is a Windows compressed zip file, so you will need a tool to uncompress it.
- For Windows, use any of the zipping/unzipping tools. Such as 7-zip, available at http://www.7-zip.org, or the classical Winzip tool, available at http://www.winzip.com.
- For Linux/Unix, there are several tools, such as unzip and gunzip. These usually come with the distribution.
- For MacOS, use the MacZip tool, available in several places.
- Unpack the distribution. It will create a new folder/directory called "Ejs", and that folder/directory will contain: the file "EjsConsole.jar", and two folders/directories: "data" and "Simulations".
- Do not alter any files within the folder/directory called "data", and do not change the name of the folder/directory called "data".
- The folder/directory called "Simulation" will be the work area. Within the folder/directory "Simulation" is a folder/directory called "_library"; do not alter any files within the folder/directory called "_library", and do not change the name of the folder/directory called "_library".
- If you need to install Java, go to http://java.sun.com/javase/downloads/. The current version of Ejs requires JRE 1.5 or later. (Note that only the Java Runtime Environment [JRE] is needed; the Java Development Kit [JDK] contains JRE as well as other things which are not needed to run Ejs.)
- For Windows, download the JRE installer; it is available in both online (smaller initial download size) and offline (self-contained) versions.
- For Linux/Unix, download either the JRE installer or an rpm package which will do the installation.
- MacOS X comes with a fully configured and ready-to-use Java Development Kit.