Clean Code: A Handbook of Agile Software Craftsmanship

10Classes

with Jeff Langr

So far in this book we have focused on how to write lines and blocks of code well. We have delved into proper composition of functions and how they interrelate. But for all the attention to the expressiveness of code statements and the functions they comprise, we still don’t have clean code until we’ve paid attention to higher levels of code organization. Let’s talk about clean classes.

Class Organization

Following the standard Java convention, a class should begin with a list of variables. Public static constants, if any, should come first. Then private static variables, followed by private instance variables. There ...