Class Diagram(类图)
Class diagram is a static diagram which represents the static view of an application.
Class Diagram is composed of attributes、methods、association、constraints。
💨Class diagram describe the 【attributes】 and 【operations】 of a class and the 【constraints】 imposed on the system
Class diagram shows a collection of classes, interfaces, associations, collaborations, and constraints
⚽Purpose of Class Diagrams
💫 Analysis and design of the static view of an application.
💫 Describe responsiblities of a system.
💫 Base for component and deployment diagrams.
💫 Forward and reverse engineering.
⚾How to Draw a Class Diagram
Class diagram is basically a graphical representation of the static view of the system and represents different aspects of the application.
A collection of class diagrams represent the whole system.
The following points should be remembered while drawing a class diagram
- the name of the class diagram should be meaningful to describe the aspect of the system.
- each element and their relationships should be identified in advance.
- responsibility(attributes and methods) should be identified clearly.
🏈Typical Case
an example of an Order System of an application which describes a particular aspect of the entire application
🏐Where to Use Class Diagrams?
Class diagram is a static diagram and it is used to model the static view of a system.
In a nutshell it can be said, class diagrams are used for
💧 static view of a system
💧 collaboration among the elements of the static view
💧 the functionalities performed by the system
💧 construction of software application using object oriental languages.
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