Handle Method Javadocs Requirements for Checkstyle Warnings

Currently, many warning messages are produced for the methods that lack Javadocs in the maven compilation phase. Most of them are simple constructors and minor getter/setter methods, but it would be nice to fill them out to neatly organize our Javadocs. It would also be nice to handle this issue from time to time if difficult to handle all of them at once.

This issue should eventually get rid of all warning messages and make the warning into error messages to enforce javadocs for methods.