Why are Java constants static and final? The reason why global constants in Java use the static and final keywords is because final ensures a variable cannot change, while static ensures only one copy ...

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 ...

There are other ways you can categorize variables in Java, and other ways you can manipulate data. For instance, a constant is a variable whose value never changes. This is primarily useful for ...

Variables in Java are not allowed to contain white space ... The only exception to the lowerCamelCase rule is for variables with a constant value. Any variable decorated with a static final keyword ...

As an example, the Java Collections Framework includes the AbstractList class, which uses the state of variables. In cases where you don’t need to maintain the state of the class, it’s usually ...