how to installed java comm in solaris

I have installed borland jbuilder5 enterprise edition,and

put the libSolarisSerialParallel.so in LD_LIBRARY_PATH

(LD_LIBRARY_PATH=/usr/lib), the comm.jar in jre\lib\,javax.comm.properties in jre\lib .

But when I Open the serial port, the program always raise a exception "null".

What can i do ?

[340 byte] By [foxnt] at [2007-9-26 4:27:17]