Object-Oriented Programming

Object-Oriented Programming

1. Objects

   • Attributes(fields)
     • variables(primitives/references to other objects)
   • Actions(methods)
     • define actions that objects can do
     • returnType methodName (listOfArguments)
     • void- method that returns nothing
     • Main method
       • public static void main (String [] args)

2. Classes

   • Fundamental building blocks
   • Class name, field & method
   • class ClassName
   • constructor - used to create objects, classes must have one
     • constructorName (listOfArguments)