医院的类图

要给出医院的类图，可以使用UML类图来表示类与类之间的关系。下面是一个简单的医院类图示例：

+----------------------------------------------+
|                  Hospital                    |
+----------------------------------------------+
| - name: String                               |
| - departments: List<Department>              |
+----------------------------------------------+
| + Hospital(name: String)                     |
| + getName(): String                          |
| + setName(name: String): void                |
| + addDepartment(department: Department): void|
| + getDepartments(): List<Department>          |
| + findDepartmentByName(name: String): Department |
| + removeDepartment(department: Department): boolean |
| + calculateTotalRevenue(): double            |
+----------------------------------------------+

+----------------------------------------------+
|                Department                     |
+----------------------------------------------+
| - name: String                               |
| - doctors: List<Doctor>                      |
| - patients: List<Patient>                    |
+----------------------------------------------+
| + Department(name: String)                   |
| + getName(): String                          |
| + setName(name: String): void                |
| + addDoctor(doctor: Doctor): void            |
| + getDoctors(): List<Doctor>                  |
| + addPatient(patient: Patient): void         |
| + getPatients(): List<Patient>                |
| + findDoctorByName(name: String): Doctor     |
| + findPatientByName(name: String): Patient   |
| + removeDoctor(doctor: Doctor): boolean      |
| + removePatient(patient: Patient): boolean   |
+----------------------------------------------+

+----------------------------------------------+
|                  Doctor                      |
+----------------------------------------------+
| - name: String                               |
| - specialty: String                          |
+----------------------------------------------+
| + Doctor(name: String, specialty: String)    |
| + getName(): String                          |
| + setName(name: String): void                |
| + getSpecialty(): String                     |
| + setSpecialty(specialty: String): void      |
| + examinePatient(patient: Patient): void     |
| + prescribeMedicine(patient: Patient): void  |
+----------------------------------------------+

+----------------------------------------------+
|                  Patient                      |
+----------------------------------------------+
| - name: String                               |
| - age: int                                   |
+----------------------------------------------+
| + Patient(name: String, age: int)            |
| + getName(): String                          |
| + setName(name: String): void                |
| + getAge(): int                              |
| + setAge(age: int): void                     |
| + receivePrescription(prescription: String): void |
+----------------------------------------------+

这个类图表示了医院、科室、医生和患者之间的关系。医院包含多个科室，科室包含多个医生和患者。医生可以对患者进行检查和开具处方。

以下是一个示例代码，展示了如何使用这个类图：

public class Hospital {
    private String name;
    private List<Department> departments;

    public Hospital(String name) {
        this.name = name;
        this.departments = new ArrayList<>();
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public void addDepartment(Department department) {
        departments.add(department);
    }

    public List<Department> getDepartments() {
        return departments;
    }

    public Department findDepartmentByName(String name) {
        for (Department department : departments) {
            if (department.getName().equals(name)) {
                return department;
            }
        }
        return null;
    }

    public boolean removeDepartment(Department department) {
        return departments.remove(department);
    }

    public double calculateTotalRevenue() {
        double totalRevenue = 0;
        for (Department department : departments) {
            for (Patient patient : department.getPatients()) {
                totalRevenue += patient.getBill();
            }
        }
        return totalRevenue;
    }
}

public class Department {
    private String name;
    private List<Doctor> doctors;
    private List<Patient> patients;

    public Department(String name) {
        this.name = name;
        this.doctors = new ArrayList<>();
        this.patients = new ArrayList<>();
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public void addDoctor(Doctor doctor) {
        doctors.add(doctor);
    }

    public List<Doctor> getDoctors() {
        return doctors;
    }

    public void addPatient(Patient patient) {
        patients.add(patient);
    }

    public List<Patient> getPatients() {