How can I create and link javadoc.jar when compiling a java library?

When I compile some matlab functions to a java class with Matlab Library Compiler, I would like to create sources and javadoc jar files for this class as well. So when I use the library in my java code i would have the documentation and source. How can this be done? I get javadoc and source files in my package but they're not in jar form and neither are they linked to the compiled jar.