The table is not labeled properly. The proper label should be Table 1.3.4. Also, the description is a bit unclear. You may want to eliminate the last sentence

Note this is intended to just be a demo issue to suggest enhancements on the book.

Is your feature request related to a problem? Please describe.
By adding documentation, testing and enhancing the software will be much easier. Also, developers could use it to know what code is doing what.

Describe the solution you'd like
Documentation / Full Coverage

Documentation in source files are not shown to project end.

Javadocs for classes and methods are only visible in library source, and not release builds.