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    Automation

    UML Class Diagram

    UML Class Diagram

    UML class diagram is a static diagram that shows classes and their relationships in the system. A class diagram is displayed as a rectangle with three components. A class is like blueprint that defines the object.

    Class Symbol

    Class symbol in UML Class diagrams consists of three components separated by lines in a rectangle.

    • Class name
    • Attributes or Variables
    • Operations  or Methods

    UML Class Symbol Class Diagram

     

    Class name identified the class in the system.

    Attributes define the state of the class. Methods show the behavior of the class.

     

    Interface Symbol

    Interface symbol is same like Class symbol with <<interface>>  string added to the top of the symbol. An interface is a contract between the class and to the public world. An interface contains only the method signatures without implementations. So, if the class implements an Interface all the methods should appear in the class.

    Association

    Association is represented as  a solid line connecting the classifier / (s).

    Generalization

    Generalization Symbol UML

    Composition

    Composition SYmbol UML

    Aggregation

     

    Aggregation Sumbol UML

     

    Sample Class Diagram

    A sample UML Class diagram that shows multi-level inheritance.

    UML Class Diagram

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