ThingMagic Mercury API v1.23.0 - Manual (Page 101)

Java Language Interface 101
Java Language Interface
JNI Library
The java interface, when connecting to readers of type SerialReader, requires the use
of a JNI Serial Driver library to handle the low level serial port communications. The
mercuryapi.jar includes libraries supporting the following environments:

Linux on x86

Linux on AMD64

Windows on x86 (see Required Windows Runtime Libraries )

MacOSX
For other platforms the library will have to be custom built. The source and example
makefiles/projects for building the library is in [SDKInstall]/c/[proj/src]/jni.