I have a problem with Runtime.exec command when I want to execute it
in the working directory.
My Runtime.exec command calls an external Application(Samcef) which
uses certain environment variables
and licence for calling the external application.

I have used this command:-
............
............

String[] sz_env = {""};
String sz_working_directory = D:\\users
String sz_execute_cmd = sz_Samcef_exe + " ba,as iteration n 1 <
samcef_input.dat";

Process wait = Runtime.getRuntime().exec(sz_exec_command, sz_env, new
File(sz_working_directory));
............
............

It does'nt take the existing environment settings of the operating
system.

But if I use this command from command prompt it works fine.
If I use cmd /c ,go to the working directory using cd then it works
fine.
But I dont want to use cmd/c , I want it to work both on windows and
unix.