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Changes in version 4.0

 

The main reason to make a major move to version 4.0, in which the internal organization of EJS has changed considerable, was because we needed to make EJS better suited for multiuser environments.

 

Workspaces
One of the changes involves the concept of workspace. A workspace is a directory where all your related work will be placed. You can have more than one workspaces in your hard disk. This is useful for different project, but the main reason to implement it was because it is the base for multi-user management. Different users just have different workspaces (but they all share the same EJS binaries). You can read more about workspaces here.

 

The role of the good, old Simulations directory is now split into the source, output, and export subdirectories of your workspace.

 

Do not dig into generated directories (but use 'Export' instead)
You should not explore the output directory (where EJS generates all its output files) and try to open generated simulations files (such as MultipleCollisions_Simulation.html) with your web browser. This simply won't work. The reason why we did that is technical, seeking for improved disk efficiency and avoiding filename length limitations of some operating systems.

 

Now, to obtain a valid HTML file you need to do one of the following two things:

  • Use the Export web site with applets menu option of the Package taskbar button. This is recommended for creating a group of HTML for several simulations at once. EJS can also minimize the JAR sizes that the group must download.
  • Export the simulation as a single JAR file and then run it and select the Create HTML page menu option in it.

 

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Page last modified on August 29, 2008, at 11:25 PM