Opening /dev/cu.* doesn't require DCD to be asserted and succeeds immediately.

This includes /dev/tty.Bluetooth-Modem and friends.

Opening certain devices, such as serial endpoints over Bluetooth, can take a long time before they fail. Moreover, it's better to show devices even when the user currently doesn't have permissions to access them - else one might think of a problem with the device or driver, when a "sudo chmod 666" would do the trick.

Before dynamically extracting the matching native library, first try to load it using System.loadLibrary(). This is helpful when it's not desired to modify the host system (but rather make changes to java.library.path).

The command used to compile this on 10.9.1:
g++ -shared -arch i386 -arch x86_64 -I"$JAVA_HOME/include" -I"$JAVA_HOME/include/darwin" -I"/System/Library/Frameworks/IOKit.framework/Headers" -o libjSSC-2.8_universal.jnilib jssc.cpp

getPortProperties() returns a map with keys and values as string. The currently available properties are: idProduct (lowercase hexadecimal zero-padded to four digits), idVendor (same as idProduct), manufacturer, product, serial. This is currently implemented for Linux and OS X (only in the Universal binary).

The command used to compile this on 10.9.1:
g++ -shared -arch i386 -arch x86_64 -I"$JAVA_HOME/include" -I"$JAVA_HOME/include/darwin" -I"/System/Library/Frameworks/IOKit.framework/Headers" -framework CoreFoundation -framework IOKit -o libjSSC-2.8_universal.jnilib jssc.cpp

Command used to compile on a current Raspbian: g++ -shared -march=armv6 -mfpu=vfp -mfloat-abi=hard -I/usr/lib/jvm/jdk-7
-oracle-armhf/include -I/usr/lib/jvm/jdk-7-oracle-armhf/include/linux -o libjSSC-2.8_armhf.so jssc.cpp

This was built with: g++ -shared -I /usr/lib/jdk1.8.0_121/include -I/usr/lib/jdk1.8.0_121/include/linux -o libjSSC-2.8_aarch64.so jssc.cpp