You will learn how to declare a typesafe enum and use it in a switch ... You could avoid the “lack of type safety” and “not enough information” problems by using java.lang.String constants.

Classes, fields, methods, constructors, and objects are the building blocks of object-based Java applications. This Java tutorial teaches you how to declare classes, describe attributes via fields ...

The other types of variables in Java are: byte – stores whole numbers from -128 to 127; short – stores numbers from -32,768 to 32,767; int – stores whole numbers from -2,147,483,648 to ...