7-2 校园角色类设计(学生Student、教员Faculty和职员Staff)
分数 15
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作者 刘凤良
单位 天津仁爱学院
学校需要构建综合系统，使用者包含多种角色。角色Role分两类：学生Student和雇员Employee；雇员又分为教员Faculty和职员Staff。
每个角色都有姓名、年龄。学生有学号、班级。一个雇员有工号、入职日期。教员有职称。职员有职位称号。
请以如下Main类为基础，构建各个角色类，将代码补充完整。
public class Main { public static void main(String[] args) { Faculty fac = new Faculty("张三", 32, "33006", 2021, 9, 1, "讲师"); Student stu = new Student("李四", 19, "20201103", "202011"); Staff sta = new Staff("王五", 27, "32011", 2017, 7, 23, "教务员"); fac.show(); sta.show(); stu.show(); } } //基类 Role class Role { protected String name; //姓名 protected int age; //构造方法 public Role() { } public Role(String name, int age) { this.name = name; this.age=age; } //Setter/Getter public String getName() { return name; } public void setName(String name) { this.name = name; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } //业务方法 public void show(){ System.out.print("我是"+name+"，年龄"+age+"岁。"); } } //派生类 Faculty 教员 class Faculty extends Role{ } //派生类 Student 学生 class Student extends Role{ } //派生类 Staff 职员 class Staff extends Role{ }
输出样例:
我是张三，年龄32岁。工号是33006，2021年9月1日入职。是一名教师，讲师职称。 我是王五，年龄27岁。工号是32011，2017年7月23日入职。是一名教务员。 我是李四，年龄19岁。学号是20201103，来自202011班。
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import java.time.LocalDate; public class Main { public static void main(String[] args) { Faculty fac = new Faculty("张三", 32, "33006", 2021, 9, 1, "讲师"); Student stu = new Student("李四", 19, "20201103", "202011"); Staff sta = new Staff("王五", 27, "32011", 2017, 7, 23, "教务员"); fac.show(); sta.show(); stu.show(); } } //基类 Role class Role { protected String name; //姓名 protected int age; //构造方法 public Role() { } public Role(String name, int age) { this.name = name; this.age = age; } //Setter/Getter public String getName() { return name; } public void setName(String name) { this.name = name; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } //业务方法 public void show() { System.out.print("我是" + name + "，年龄" + age + "岁。"); } } //派生类 Faculty 教员 class Faculty extends Role { private String employeeID; private LocalDate hireDate; private String title; public Faculty(String name, int age, String employeeID, int year, int month, int day, String title) { super(name, age); this.employeeID = employeeID; this.hireDate = LocalDate.of(year, month, day); this.title = title; } @Override public void show() { super.show(); System.out.println("工号是" + employeeID + "，" + hireDate.getYear() + "年" + hireDate.getMonthValue() + "月" + hireDate.getDayOfMonth() + "日入职。是一名教师，" + title + "职称。"); } } //派生类 Student 学生 class Student extends Role { private String studentID; private String className; public Student(String name, int age, String studentID, String className) { super(name, age); this.studentID = studentID; this.className = className; } @Override public void show() { super.show(); System.out.println("学号是" + studentID + "，来自" + className + "班。"); } } //派生类 Staff 职员 class Staff extends Role { private String employeeID; private LocalDate hireDate; private String position; public Staff(String name, int age, String employeeID, int year, int month, int day, String position) { super(name, age); this.employeeID = employeeID; this.hireDate = LocalDate.of(year, month, day); this.position = position; } @Override public void show() { super.show(); System.out.println("工号是" + employeeID + "，" + hireDate.getYear() + "年" + hireDate.getMonthValue() + "月" + hireDate.getDayOfMonth() + "日入职。是一名" + position + "。"); } }
