Prerequisites
=============
.. toctree::
   :maxdepth: 2

TasGenOpt is designed to run on 32-bit and 64-bit Windows operating systems, and requires Java to be installed and configured correctly.

Java Installation & Set-up
--------------------------
The Java runtime environment can be downloaded from the `Oracle Website`_, and you can download either the 32-bit or 64-bit version.

.. note:: You must add the Java directory to your system's 'Path' environment variable in order to use TasGenOpt.

Adding Java to the Path Variable
--------------------------------
Adding Java to the computer's Path environment variable allows Java to be used from a command prompt in any directory. If it is not set up correctly, TasGenOpt will think that Java is not installed.

Using Windows 10:
	1. Open the start menu and select, **Edit the system environment variables**.
		.. image:: images/start_environ_vars.png
			:scale: 75 %

	2. Under the **Advanced** tab, press **Environment Variables**
		.. image:: images/environment_vars_btn.png
			:scale: 75 %

	3. Under **System Variables** select **Path** and press **Edit**
		.. image:: images/path_var.png
			:scale: 75 %

	4. Add an entry pointing to the folder containing Java.exe
		.. image:: images/javapath.png
			:scale: 75 %

.. _Oracle Website: https://java.com/en/download/

Confirming the Path Variable is Set Up Correctly
------------------------------------------------
To confirm that the Path variable is set up correctly, open a command prompt and enter the following:
::
  java --version

If the variable is set up correctly, you will see output similar to the following:
	.. image:: images/javaversion.png

Compatible Java Versions
------------------------
TasGenOpt has been tested with the following java versions:
  * Java Standard Edition 8
  * Java Standard Edition 9

TasGenOpt should be compatible with most modern versions of java.