Object Oriented Programming

Object Oriented Programming

1. Objects

   • Every Object has two features:
     • Fields
       • Variables that represent:
         • Primitive data types e.g. int
         • Other objects
       • Typically written in camel case e.g. carSpeed
     • Methods
       • Methods define what actions a class's object can make
       • Constructors: Methods with the same name as the class used to instantiate objects
       • Main method: The entry point to an application
         • public static void main(String[] args)
   • Objects must be instantiated through a constructor before they can be referenced

2. Classes: a Java class is a blueprint/template to make objects of identical type