定义普通的基类Building类，有楼房号、层数、房间数及建筑面积属性。定义派生类House类继承Building类，并包含数据成员卧室的数量、卫生间的数量。定义派生类Office 类继承Building类，包含数据成员灭火器数及办公桌数量。

在面向对象编程中，我们可以定义一个基础类型的类作为其他类的模板，这就是我们所说的基类。这里有一个名为`Building`的基类，它包含了通用的建筑物信息，如：

public class Building {
    private String buildingNumber;
    private int numberOfFloors;
    private int roomCount;
    private double floorArea;

    // 构造函数
    public Building(String number, int floors, int rooms, double area) {
        this.buildingNumber = number;
        this.numberOfFloors = floors;
        this.roomCount = rooms;
        this.floorArea = area;
    }

    // 获取和设置属性的方法
    // ...
}

然后，为了满足特定需求，我们创建两个派生类：`House` 和 `Office`。这两个类都继承自 `Building` 并添加了特有的属性：

class House extends Building {
    private int bedroomCount;
    private int bathroomCount;

    // House的构造函数
    public House(String number, int floors, int rooms, double area, int bedrooms, int bathrooms) {
        super(number, floors, rooms, area);
        this.bedroomCount = bedrooms;
        this.bathroomCount = bathrooms;
    }
    
    // 获取和设置卧室/卫生间的方法
    // ...
}

class Office extends Building {
    private int fireExtinguishers;
    private int deskCount;

    // Office的构造函数
    public Office(String number, int floors, int rooms, double area, int extinguishers, int desks) {
        super(number, floors, rooms, area);
        this.fireExtinguishers = extinguishers;
        this.deskCount = desks;
    }

    // 获取和设置灭火器/办公桌的方法
    // ...
}