ssh -t user1@192.168.2.125 'sudo reboot'

String cmd="ssh -t user1@192.168.2.125 'sudo reboot'";
        log.info("Executing command.."+cmd);
        p = Runtime.getRuntime().exec(cmd);
        //open error stream and input stream and process

[2014-10-30 19:07:55,593] INFO Executing command..ssh -t user1@192.168.2.125 'sudo reboot'
           [2014-10-30 19:07:57,070] ERROR ERROR while executing command:
           ssh -t user1@192.168.2.125 'sudo reboot'
            [2014-10-30 19:07:57,070] ERROR Pseudo-terminal will not be allocated because stdin is not a terminal.
            bash: sudo reboot: command not found