Object and Class

1) Object and Class

Class is template to create objects and represents classification of objects such as Employee, which is a class for the objects such as “Tom”, “Joe”, “Hanako”

2) OO-Analysis

            - Break the requirements into smaller problems (decompose the requirements)

            - Try to understand “WHAT” is require instead of “HOW” to implement

- Create conceptual domain model (only consider domain specific objects

   and  not system specific)

Such as in case of  our “Online Banking System” (OBS) Project following is a conceptual design (domain model)

3) OO-Design

o   For each identified object find out how they will cooperate and collaborate with each other to understand the relationship between them.

o   Then assign responsibility by adding properties and methods (behavior) to each object

o   Add helper objects (system specific and not business specific)

Such as TransactionManager

4) OO-Implementation:

o   Implement the design using specific OO Language, such as Java

-       Create new project in eclipse : OnlineBankingSystem

o   Create class : Customer

public class Customer {

       private String lastName;

       private String firstName;

       public String getLastName() {

              return lastName;

       }

       public void setLastName(String lastName) {

              this.lastName = lastName;

       }

       public String getFirstName() {

              return firstName;

       }

       public void setFirstName(String firstName) {

              this.firstName = firstName;

       }

}