runtime.exec() call and user interaction

[Aarti Thorat]

I wonder if Runtime.exec() can deal with user interaction in subprocess.
For example, program A.java calls program B.class through Runtime.exec(). Program B gives some output and receives standard input. I understand how B's output is
redirected to A through the getInputStream(), but I have no idea how B's standard input(terminal input) can be handled. When I tried this
type of program, I found out two processes just
wait(maybe blocked) forever.
Any Help is greatly appreciated.
Thanks !
Aarti.

[Ramakrishnan G]

Hai Arti,
Can u give me more specific details about what thos processes are doing.