How execute a command on the Console from our prgm

Question

can any body let me know how do we execute a command on the Console from our prgm . . on a windows platform ..
eg. a simple commant like "dir" or "cls" . . or whatever . . .
i heard that it can be done by calling the native methods . . but how is that done???

Answer 1

thankx for the quick reply . .
for instance i wanna take a file from my local machine . .
a c++ source code . . (myfile.cpp)
i want to execute that on the prompt using c:\> tcc myfile.cpp
and all these i mean reading the file from the HDD and giving it to the console and getting the output everything should be done by my prgm . .
so basically the command which i usually run on the prompt i should be able to pass that command from my java prgm to the console and get that thing executed . .
i hope i am clear now .. .