From 42462a87a828045a90ebf5a0617727e8c3502276 Mon Sep 17 00:00:00 2001
From: Chengwuyi <3394813085@qq.com>
Date: Sat, 30 May 2026 22:05:24 +0800
Subject: [PATCH] =?UTF-8?q?=E4=B8=8A=E4=BC=A0=E6=96=87=E4=BB=B6=E8=87=B3?=
 =?UTF-8?q?=20'w5'?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 w5/Person.java              |  21 +++++++++++++++++++++
 w5/SchoolSystem.java        |  30 ++++++++++++++++++++++++++++++
 w5/Student.java             |  18 ++++++++++++++++++
 w5/Teacher.java             |  18 ++++++++++++++++++
 w5/TemperatureConverter.zip | Bin 0 -> 943 bytes
 5 files changed, 87 insertions(+)
 create mode 100644 w5/Person.java
 create mode 100644 w5/SchoolSystem.java
 create mode 100644 w5/Student.java
 create mode 100644 w5/Teacher.java
 create mode 100644 w5/TemperatureConverter.zip

diff --git a/w5/Person.java b/w5/Person.java
new file mode 100644
index 0000000..d6f04a9
--- /dev/null
+++ b/w5/Person.java
@@ -0,0 +1,21 @@
+public abstract class Person {
+    protected String name;
+    protected int age;
+
+    public Person(String name, int age) {
+        this.name = name;
+        this.age = age;
+    }
+
+    public String getName() { return name; }
+    public int getAge()     { return age; }
+
+    public abstract String getRole();
+    public abstract String getExtraInfo();
+
+    @Override
+    public String toString() {
+        return getRole() + " | Name: " + name + ", Age: " + age
+               + ", " + getExtraInfo();
+    }
+}
diff --git a/w5/SchoolSystem.java b/w5/SchoolSystem.java
new file mode 100644
index 0000000..4aea6bc
--- /dev/null
+++ b/w5/SchoolSystem.java
@@ -0,0 +1,30 @@
+import java.util.ArrayList;
+import java.util.List;
+
+public class SchoolSystem {
+    private List<Person> personList = new ArrayList<>();
+
+    // 统一的 addPerson 方法，替代原来的 addStudent / addTeacher
+    public void addPerson(Person p) {
+        personList.add(p);
+        System.out.println("Added: " + p);
+    }
+
+    public void listAll() {
+        System.out.println("\n--- All Members ---");
+        for (Person p : personList) {
+            System.out.println(p);
+        }
+    }
+
+    public static void main(String[] args) {
+        SchoolSystem system = new SchoolSystem();
+
+        system.addPerson(new Student("Alice", 20, "S001", 3.8));
+        system.addPerson(new Student("Bob",   19, "S002", 3.5));
+        system.addPerson(new Teacher("Mr. Chen", 35, "Math", 10));
+        system.addPerson(new Teacher("Ms. Li",   28, "English", 4));
+
+        system.listAll();
+    }
+}
diff --git a/w5/Student.java b/w5/Student.java
new file mode 100644
index 0000000..7384080
--- /dev/null
+++ b/w5/Student.java
@@ -0,0 +1,18 @@
+public class Student extends Person {
+    private String studentId;
+    private double gpa;
+
+    public Student(String name, int age, String studentId, double gpa) {
+        super(name, age);
+        this.studentId = studentId;
+        this.gpa = gpa;
+    }
+
+    @Override
+    public String getRole() { return "Student"; }
+
+    @Override
+    public String getExtraInfo() {
+        return "ID: " + studentId + ", GPA: " + gpa;
+    }
+}
diff --git a/w5/Teacher.java b/w5/Teacher.java
new file mode 100644
index 0000000..2e3fa77
--- /dev/null
+++ b/w5/Teacher.java
@@ -0,0 +1,18 @@
+public class Teacher extends Person {
+    private String subject;
+    private int yearsOfExperience;
+
+    public Teacher(String name, int age, String subject, int yearsOfExperience) {
+        super(name, age);
+        this.subject = subject;
+        this.yearsOfExperience = yearsOfExperience;
+    }
+
+    @Override
+    public String getRole() { return "Teacher"; }
+
+    @Override
+    public String getExtraInfo() {
+        return "Subject: " + subject + ", Experience: " + yearsOfExperience + " years";
+    }
+}
diff --git a/w5/TemperatureConverter.zip b/w5/TemperatureConverter.zip
new file mode 100644
index 0000000000000000000000000000000000000000..9553eedc9f962d68b8c2e18b63d26c3c7c9fac7c
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