Object-Oriented Programming

Object-Oriented Programming

1. Classes

   • class name
   • methods
   • fields
   • are the blueprint(template) for...
     • Objects
       • instance of a Class
       • must have
         • name
           • camel naming convention
       • methods
         • declaration part
         • body
         • have a return type
           • primitive, Object, or void
         • "main" method
           • entry point to application
           • arguments passed as Strings
       • fields
         • have data type
         • variables
   • Pascal naming convention
   • constructors
     • required
     • argument or no argument
     • create Objects
     • "new"
     • null
       • reference variable has no value

2. UML Class Diagram

   • shows...
     • fields
     • methods
       • : "return type"