Java Programming

Hi,


can anyone tell me what this is used for?

i though i maybe could use it in this example

exec(cmd /c start)
out.write("dir".getBytes());

but that doesn't seem to work?

also does anyone know like if i want to start a cmd and want to keep that open and do multiple commands like first cd then dir
i thought u could with the ouputstream, but that isn't right? or am i wrong?


thanks in advance