更新 '挑战题'

挑战题

@@ -1,4 +1,8 @@
-public class Person {
+import java.util.ArrayList;
+import java.util.List;
+
+// 父类 Person
+class Person {
     private String name;
     private int age;
 
@@ -8,14 +12,120 @@ public class Person {
         this.age = age;
     }
 
-    // 统一的基础信息打印方法
     public void showInfo() {
         System.out.println("姓名：" + name + "，年龄：" + age);
     }
 
-    // getter/setter
-    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; }
+    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;
+    }
+}
+
+// 学生子类
+class Student extends Person {
+    private String stuId;
+    private String major;
+
+    public Student() {}
+    public Student(String name, int age, String stuId, String major) {
+        super(name, age);
+        this.stuId = stuId;
+        this.major = major;
+    }
+
+    @Override
+    public void showInfo() {
+        super.showInfo();
+        System.out.println("身份：学生，学号：" + stuId + "，专业：" + major);
+    }
+
+    public String getStuId() {
+        return stuId;
+    }
+    public void setStuId(String stuId) {
+        this.stuId = stuId;
+    }
+    public String getMajor() {
+        return major;
+    }
+    public void setMajor(String major) {
+        this.major = major;
+    }
+}
+
+// 教师子类
+class Teacher extends Person {
+    private String teaId;
+    private String dept;
+
+    public Teacher() {}
+    public Teacher(String name, int age, String teaId, String dept) {
+        super(name, age);
+        this.teaId = teaId;
+        this.dept = dept;
+    }
+
+    @Override
+    public void showInfo() {
+        super.showInfo();
+        System.out.println("身份：教师，工号：" + teaId + "，院系：" + dept);
+    }
+
+    public String getTeaId() {
+        return teaId;
+    }
+    public void setTeaId(String teaId) {
+        this.teaId = teaId;
+    }
+    public String getDept() {
+        return dept;
+    }
+    public void setDept(String dept) {
+        this.dept = dept;
+    }
+}
+
+// 管理类
+class PersonManager {
+    private List<Person> list = new ArrayList<>();
+
+    // 统一添加方法，合并addStudent、addTeacher
+    public void addPerson(Person p) {
+        list.add(p);
+    }
+
+    // 遍历展示所有人信息
+    public void showAll() {
+        for(Person p : list){
+            p.showInfo();
+            System.out.println("--------------------");
+        }
+    }
+}
+
+// 主测试类
+public class PersonTest {
+    public static void main(String[] args) {
+        PersonManager manager = new PersonManager();
+
+        // 创建学生、教师对象
+        Student s1 = new Student("张三", 19, "2025001", "大数据管理");
+        Teacher t1 = new Teacher("王老师", 38, "T10086", "计算机学院");
+
+        // 统一添加
+        manager.addPerson(s1);
+        manager.addPerson(t1);
+
+        // 展示所有信息
+        manager.showAll();
+    }
 }