Space & Time - Programming GPS and OpenStreetMap Applications with Java - page 52

Figure4.1. The GPS package to handle geographical coordinates, calculate metric
coordinates, and keep universal time.

the next requirement, the GPSapplication was added to the package as a
reminder of how to make use of its classes. Actually the GPSunit is a good
entry point, and a main method could be added there. Adding a class

provides an external view to the package.

4.14.1 Minimum Implementation and TODO List
When the architect constructs an application skeleton from scratch, he
focuses on the final product, while programmers tend to drill down into
details as they occur.
The GPS package was useful to introduce space and time and get an
application running.

Nevertheless, a lot of ideas pop up in the process,