Class Diagrams

Class diagrams model object-oriented relationships.

classDiagram
    Animal <|-- Duck
    Animal <|-- Fish
    Animal <|-- Zebra
    Animal : +int age
    Animal : +String gender
    Animal: +isMammal()
    Animal: +mate()

    class Duck{
        +String beakColor
        +swim()
        +quack()
    }
    class Fish{
        -int sizeInFeet
        +canEat()
    }
    class Zebra{
        +bool is_wild
        +run()
    }

With Generics and Relationships

classDiagram
    direction RL
    class Shape {
        <<interface>>
        +x: float
        +y: float
        +draw()
    }
    class Circle {
        +radius: float
        +draw()
    }
    class Rectangle {
        +width: float
        +height: float
        +draw()
    }
    Shape <|.. Circle : implements
    Shape <|.. Rectangle : implements
    Shape <|-- Triangle : extends

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