Variable
A named box that can contain the value of some type or class. For a type like int, the value is an integer. For a class, it is the name of (or reference to) an instance of the class
Declaration: a definition of the name of the variable and the type or class of value it can containt
Syntax: <class or type name> <identifier>
Examples: // a variable x that can contain an integer int x; // variable s that can contain the name of an object of class String String s; // a variable that can contain a boolean value (true or false) boolean b;