Sending a CTRL B with java

Question

I am talking to a device via a telnet connection (telnet client from apache), the device requires us to send a CTRL-B to go into a certain mode. How can I send that via java?

Answer 1

Ctrl-B is just the byte 2.

Given an OutputStream out, out.write(2);.

Function keys and the like will have escape sequences, exactly what sequence is determined by which terminal you have negotiated to emulate.