帮我用java写医院管理系统中名为Person的抽象类，其中里面要有三个子类来表示患者、医生和护士

好的，我可以提供一个简单的实现，如下所示：

public abstract class Person {
  private String name;
  private int age;
  private String id;

  public Person(String name, int age, String id) {
    this.name = name;
    this.age = age;
    this.id = id;
  }

  // Getters and setters for name, age, and id

  public abstract String getOccupation();
}

public class Patient extends Person {
  private String medicalHistory;

  public Patient(String name, int age, String id, String medicalHistory) {
    super(name, age, id);
    this.medicalHistory = medicalHistory;
  }

  // Getter and setter for medicalHistory

  public String getOccupation() {
    return "Patient";
  }
}

public class Doctor extends Person {
  private String specialty;

  public Doctor(String name, int age, String id, String specialty) {
    super(name, age, id);
    this.specialty = specialty;
  }

  // Getter and setter for specialty

  public String getOccupation() {
    return "Doctor";
  }
}

public class Nurse extends Person {
  private int yearsOfExperience;

  public Nurse(String name, int age, String id, int yearsOfExperience) {
    super(name, age, id);
    this.yearsOfExperience = yearsOfExperience;
  }

  // Getter and setter for yearsOfExperience

  public String getOccupation() {
    return "Nurse";
  }
}

在这个实现中，我们定义了一个抽象类 `Person`，它包含了一些基本的人员信息，例如姓名、年龄和身份证号。我们还定义了一个抽象方法 `getOccupation`，用于返回人员的职业类型。

然后，我们创建了三个子类 `Patient`、`Doctor` 和 `Nurse`，它们分别表示患者、医生和护士。每个子类都继承了 `Person` 类，并且实现了 `getOccupation` 方法以返回相应的职业类型。

当你需要在医院管理系统中创建患者、医生或护士对象时，可以使用这些类来表示它们。例如：

Person patient = new Patient("张三", 30, "123456", "高血压");
Person doctor = new Doctor("李四", 40, "234567", "心脏病专家");
Person nurse = new Nurse("王五", 25, "345678", 2);