diff --git a/W5周梓浩202506050319/Person.java b/W5周梓浩202506050319/Person.java
new file mode 100644
index 0000000..befa02a
--- /dev/null
+++ b/W5周梓浩202506050319/Person.java
@@ -0,0 +1,42 @@
+package Person;
+
+abstract class Person{
+    protected String name;
+    abstract void add();
+}
+
+
+class Student extends Person{
+    String studentId;//定义属性
+    double score;
+    public Student(String studentId,String name,double score){
+        this.studentId=studentId;
+        this.name=name;
+        this.score=score;
+    }
+    @Override
+    void add(){
+        System.out.println("已成功添加学生 "+studentId+" "+name+" "+score);
+    }
+}
+class Teacher extends Person{
+    String teacherId;
+    String subject;
+    public Teacher(String teacherId,String name,String subject){
+        this.subject=subject;
+        this.name=name;
+        this.teacherId=teacherId;
+    }
+    @Override
+    void add(){
+        System.out.println("已成功添加老师 "+teacherId+" "+name+" "+subject);
+    }
+}
+
+class Add{
+    public static void addPerson(Person p){
+        p.add();
+    }
+}
+
+
diff --git a/W5周梓浩202506050319/PersonTest.java b/W5周梓浩202506050319/PersonTest.java
new file mode 100644
index 0000000..a0786a7
--- /dev/null
+++ b/W5周梓浩202506050319/PersonTest.java
@@ -0,0 +1,13 @@
+package Person;
+
+public class PersonTest {
+    public static void main (String[] args) {
+        //setting up the first object
+        Person s1=new Student("0001","Roya",90);
+        //setting up the second object
+        Person t1=new Teacher("001","Edward","Biology");
+        //using the approach addPerson()
+        Add.addPerson(s1);
+        Add.addPerson(t1);
+    }
+}
diff --git a/W5周梓浩202506050319/Shape.java b/W5周梓浩202506050319/Shape.java
new file mode 100644
index 0000000..4d26e6f
--- /dev/null
+++ b/W5周梓浩202506050319/Shape.java
@@ -0,0 +1,47 @@
+package Shape;
+
+abstract public class Shape {
+    abstract void draw();
+}
+class Circle extends Shape{
+    private double r;
+    public Circle(double r){
+        this.r=r;
+    }
+    @Override
+    public void draw(){
+        System.out.println("已绘制半径为"+r+"的圆");
+    }
+}
+
+class Rectangle extends Shape{
+    private double chang;
+    private double kuan;
+    public Rectangle(double chang,double kuan){
+        this.chang=chang;
+        this.kuan=kuan;
+    }
+    @Override
+    public void draw(){
+        System.out.println("已绘制长宽分别为"+chang+"和"+kuan+"的矩形");
+    }
+}
+
+class Triangle extends Shape{
+    private double di;
+    private double height;
+    public Triangle(double di,double height){
+        this.di=di;
+        this.height=height;
+    }
+    @Override
+    public void draw(){
+        System.out.println("已绘制底和高分别为"+di+"和"+height+"的三角形");
+    }
+}
+
+class ShapeUtil{
+    public static void drawShape(Shape s){
+        s.draw();
+    }
+}
\ No newline at end of file
diff --git a/W5周梓浩202506050319/ShapeTest.java b/W5周梓浩202506050319/ShapeTest.java
new file mode 100644
index 0000000..f392a76
--- /dev/null
+++ b/W5周梓浩202506050319/ShapeTest.java
@@ -0,0 +1,14 @@
+package Shape;
+
+public class ShapeTest {
+    public static void main(String[] args){
+        System.out.println("--测试三个类--");
+        //circle
+        Circle round=new Circle(5);
+        Rectangle b=new Rectangle(4,7);
+        Triangle c=new Triangle(8,4);
+        ShapeUtil.drawShape(round);
+        ShapeUtil.drawShape(b);
+        ShapeUtil.drawShape(c);
+    }
+}
diff --git a/W5周梓浩202506050319/vehicle.java b/W5周梓浩202506050319/vehicle.java
new file mode 100644
index 0000000..3c789bd
--- /dev/null
+++ b/W5周梓浩202506050319/vehicle.java
@@ -0,0 +1,41 @@
+package vehicle;
+
+abstract class vehicle {
+    abstract void run();
+}
+
+class Bike extends vehicle{
+    public String model;
+    public Bike(String model){
+        this.model=model;
+    }
+    @Override
+    public void run(){
+        System.out.println("已存放一辆"+model+"脚踏车");
+    }
+}
+class Car extends vehicle{
+    public String model;
+    public Car(String model){
+        this.model=model;
+    }
+    @Override
+    public void run(){
+        System.out.println("已存放一辆"+model+"汽车");
+    }
+}
+class Truck extends vehicle{
+    public String model;
+    public Truck(String model){
+        this.model=model;
+    }
+    @Override
+    public void run(){
+        System.out.println("已存放一辆"+model+"卡车");
+    }
+}
+class RunVehicle{
+    public void Run(vehicle v){
+        v.run();
+    }
+}
\ No newline at end of file