===Object Oriented [[Programming]] [[Uml]]===

=== [[OOP]] IN JAVA===
[[Java]] is a Object language, it does not feature all [[OOP]] concept but mosts.
They are described briefly :

  *-

  class Dog  {
   String name;

   public Dog() {
      name=new String("unknown");
   }
  }

is equivalent to

  class Dog  {
   String name = "unknown";
  }

compiler generate a Default contructor (same as 1st Dog class)

-----

Let's introduce Inheritance

  class Animal
  {
   public void sleep() { System.out.println("sleeping");}
  }

  class Bird extends Animal
  {
   public void fly() { System.out.println("flying");}
  }


  public static main(String args)
  {
   Bird titi = new Bird();
   titi.sleep(); // sleeping
   titi.fly(); // flying
  }

----
hineritance is like factorizing ( common code is placed in a mother class , then it is not duplicated)

  class Dog extends Animal
  {
   public void bark() { System.out.println("barking");}
  }


  public static main(String args)
  {
   Bird titi = new Bird();
   titi.sleep(); // sleeping
   titi.fly(); // flying

   Dog droopy = new Dog();
   droopy.sleep(); // sleeping
   droopy.bark(); // barking

  }
----
function overloading

  class Animal
  {
   public void sleep() { System.out.println("sleeping");}
  }

  class Bird extends Animal
  {
   public void fly() { System.out.println("fly over the airs");}

   public void reproduce() { System.out.println("eggs"); }
  }

  class Pinguin extends Bird {
   public void fly() { System.out.println("stay on ground & move wings");
  }

  main() {
   Animal tux = new Pinguin();
   tux.fly(); // "stay on ground & move wings" // Pingouin.fly() called // ***
   tux.reproduce(); // "eggs" // Bird.reproduce() called
   tux.sleep(); // "Sleeping" // Animal.sleep() called
  }

read it as A pinguin is a Bird that dont fly like a bird

----
Introduce super keyword

  class Human extends Animal {

   public void dress() { System.out.println("i am dressed"); }

   public void undress() { System.out.println("i am naked"); }

   public void sleep() {
     undress();  // i am naked
     super.sleep();  // sleeping
   }
  }



OOP Basics explained , see [[Java]]

===Design pattern :===

Model View Controller aka MVC :
http://www.ootips.org/mvc-pattern.html

[[Book]] : modern cpp design,  andrei alexandrescu

http://www.dofactory.com/Patterns/Patterns.aspx

[[Livre]] http://www.amazon.fr/exec/obidos/ASIN/2841773507/rzr-21#