hello guys.
I was working with a java project which will read from serial port of my laptop like USB.
So, i know the directory of my serial usb is that dev/ttyUSB0
but it is not working with my java program but when i use minicom -s
it starts reading the values.
The problem is that my java program only accepts the name of the serial ports like COM0,COM10,COM22 etc.
when i run this java program on windows it works fine.
now i want to find the port name of the directory dev/ttyUSB0

Does anyone can help me on this? it will be very thankful.

that is /dev/ttyUSB0, probably you only missed the / at the beginning. Without knowing anything about your java code we can hardly tell you the solution.

first thank u for reply.
I used that '/' too at the beginning.. thats not the problem.
like whenever we connect a device to windows, it automatically provide the name to that connection like COM0,COM22,COM10 etc
I am asking that how to know that name in linux ?
well you dont need any information about java.

probably /dev/ttyS0, /dev/ttyS1 .... http://www.tldp.org/HOWTO/Serial-HOWTO-10.html

okeh thank u sir..
the problem is that linux dont use the port names as COM0,COM30,COM21 etc
but linux store the usb names as /dev/ttyUSB0 or /dev/ttyUSB1 etc
there maybe problem with java program it do not know what a /dev/ttyUSB0/1/2 is.
i dont know but it works fine in windows.
I suggest java is a worst language. C is best among all.

have you tried /dev/ttyS0 or /dev/ttyS1 or ... ?