This product is part of JOSystem. It is composed of Java classes where shared libraries would otherwise be used. When a Java extension for JOS is installed, the corresponding JOS extension must be installed, too.
JOSExtensions will likely be used to implement javax.* packages and additional SystemUtilities - AveryRegier [1]
Just as the java. packages depend on org.jos.core., the javax. packages depend on org.jos.extensions.. The javax.comm package, for example, must use a JOS extension to access the JOS driver for a serial port. The JOS extension turns an event-driven serial port into a classic serial port for backward compatibility with the javax.comm package.
The JOS implementation of javax.comm should not use the JOSBox directly; but, it should go through a JOS extension. -- GilbertHerschberger (17 November 1999)