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 puzzlers ...

In my previous blog post, I blogged on the “code too large” problem and reproduced that error message. In this post, I look at the very similar “too many ...

All java primitive types and their wrappers with addition of String are supported. Array versions of all those types are supported as well. Additional type mappings can be defined using Mapper ...

Java enums, short for enumerations, are a special Java type used to define collections of constants. Introduced in Java 5, enums provide a more robust way of handling fixed sets of related constants ...

Learn what constants are in Java and how to use them effectively in your programs. We’ll focus on the final keyword, which allows you to create variables whose values cannot be changed once assigned.

A common pattern in Java applications is to extract strings and numeric values from the application source code and place them in a properties file. Each value in the properties file has a key which ...