Java Classes

Java Classes

1. Object Oriented Programming tools that allow programmers to create the abstraction of the problem.

   • Every class must also have a constructor. Constructors are responsible for constructing the objects.

2. They always have a name, fields and methods

   • The name of the class must always follow the declaration of the class.
   • Fields are the variables that are within a class.
   • Methods define what the class's objects can do
     • Method Mains are the entry point for the application. Only one class in each application needs to have a main method.

3. When a reference variable is not referring to an object, it doesn't have a value and it is called a Null Value.