classDiagram
    class Father {
        <<abstract>>
        # double height
        # double weight
        + Father(double height, double weight)
        + double getHeight()
        + void setHeight(double height)
        + double getWeight()
        + void setWeight(double weight)
        + void hobby()
    }

    class Son {
        - String personality
        + Son(double height, double weight, String personality)
        + String getPersonality()
        + void setPersonality(String personality)
        + void hobby()
    }

    class Main {
        + main(String[] args)
    }

    Father <|-- Son : 继承
    Main --> Son : 创建与使用