Serial i/o programming using keil c

Hi. I'm working on a project involving a java program and the micro controller NXP P89v664.

The java program which utilises the RXTX package, outputs to the serial port a string of characters to be deciphered by the micro controller.

My java program is completed and outputs correctly as checked by virtual com ports and a c program.

I have written a keil c program to receive the input but I somehow receive random inputs instead.

I used the _getkey() fuction to receive the input and putchar() function to check the output.

I'm new to keil c can anyone shed some light on this pls?

Thanks.