Unwanted Experience

hallo
guys,
In the Shell in the currently that in Jnode,i feel a problem of that.That taking input Runtime from the User at the promt.
During testing some small useful commands once i want to take a Input from the user during executing the command at runtime.But,i seen Only the Black screen retain after the Input writting.
I think its a unimplemented props in JNode shell.
tango