An instance variable differs from a local variable in the nature of its scope and its lifetime. The entire class makes up the scope of an instance variable, not the method in which it was declared.

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 ...

It contains no explicitly defined Java constructors. When no explicitly defined constructors exist, Java's virtual machine makes object creation possible by providing a default constructor to ...