In their 2009 JavaOne presentation Return of the Puzzlers: Schlock and Awe ( PDF ), Joshua Bloch and Neal Gafter presented seven more puzzlers and extracted lessons learned from each of these ...

Learn how to implement a constant in Java using final, static, enum, and annotation. Follow the naming conventions and use cases for constants.

Constant variables in Java. Another rule to remember is that an interface can only contain constant variables. Thus, the following code is fine: ...