When a native launcher, created by JEXECreator, is executed, it puts a special class into the temporary directory that is used for loading the application. On the next step, the native launcher runs the application using a Java(tm) Virtual Machine found by native launcher at run-time. All arguments passed to native launcher are passed to the application. On exit, the native launcher removes the temporary directory.
The working directory of the native launcher is the directory from which it was started. This is the directory all relative paths in the class-path add-on refer. The class-path environment variable is not affected.