New to Java

Hello,

In my Windows XP variables I have one that I want to use in a Java application.
But when I run the application this variable is not found.
I'm using Eclipse as dev IDE.
What I should do to import this environment variable to my project?

Example:
#############################################
Win32 global variable--> Test_File= "D:\Test_File\"
#######################################################
public static final String testFile = System.getProperty("Test_File");

But after this instruction testFile string is NULL. In command line, after SET command this variable is ok!!


Thanks