Difference between revisions of "OOP Class6"

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(Interfaces)
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==Interfaces==
+
[[OOP Full Dig Diagram]]
 
 
Interfaces - implements or derives from
 
 
 
An interface is a class that lacks implementation. The only thing it contains are definitions of events, indexers, methods and/or properties. The reason interfaces only provide definitions is because they are inherited by classes and structs, which must provide an implementation for each interface member defined. Since classes in c# can only be derived from one other class ( in c++ it is possible to derive from many) interfaces are used for multiple inheritance. Like abstract classes you cannot create an instance of an interface on derive from it.
 
 
 
/infod/jeff/classSource/class5/interface.cs -source
 
/infod/jeff/classSource/class5/interface2.cs -source
 
Phone interface example
 
phoneIFace.cs -source
 
Multiple interface inheritance - inherits IPhone, Cell, POTS
 
/infod/jeff/classSource/class5/phoneIFacePOTS.cs -source
 
 
 
[http://ia300218.us.archive.org/2/items/arsdigitac04n04/Lecture_04.html ArsDigita University Course 04: Object-oriented Program Design and Software Engineering - Lecture Notes 4]
 
 
 
[http://ia300107.us.archive.org/1/items/arsdigitac04n05/Lecture_05.html ArsDigita University Course 04: Object-oriented Program Design and Software Engineering - Lecture Notes 5]
 

Revision as of 16:12, 28 February 2006

UML

Dia A Drawing Program

Dia for windows

[Dog Diagrams with Dia


Simple Dog Class from week 5 DogSimple.cs - source
DogSimple.png <csharp>using System;

//Dog simple class definition public class Dog {

	public string Name;		// the dog's name

public int Age; // the dog's age public int Weight; // the dog's weight public string BarkSound; // the sound of the dog's bark

public Dog() { BarkSound = "Woof!!!"; }

public void Bark() { //put bark code here } public void Eat() { //put eat code here } }</csharp>


Dog UML with Types

Dog Class with Types from week 4 DogWithTypes.cs - source

DogWithTypes.png <csharp>using System;

//Dog simple class definition public class Dog {

	public string Name;		// the dog's name

private int Age; // the dog's age public int Weight; // the dog's weight public string BarkSound; // the sound of the dog's bark private int barkCount; //The number of time the dog has barked public Dog() { BarkSound = "Woof!!!"; }

public string Bark() { string strBark = this.BarkSound;

       barkCount ++;
       return strBark;

}

public void Eat() { //put eat code here } }</csharp>

OOP Full Dig Diagram