how processing get data out from arduino

i rewrite samples http://webzone.k3.mah.se/projects/arduino-workshop/projects/arduino_meets_processing/instructions/index.html
i wanna information arduino transfer processing.
i use ultrasonic sensor digital input. , use

code: [select]

 port = new serial (this, "com2", 9600);
 value = port.read();
in processing and

code: [select]

printinteger in arduino print out digital result got arduino.

i use correct port , serial number in both arduino , processing. out put processing not satisfied. number range 48 maybe 60. , cannot find rules between , action made arduino.
can 1 me?

or there wrong notebook. has 2 usb output, , caused because com* ports busy processing cannot recogonize them...?

i don't know command port.read() out. value arduino output? or type of data can processing out here, integer? string? or .... someother?

and processing.serial.serial@2d9c06 , "/dev/cu.usbserial-1b1 mean?
thanks

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