diff --git a/w5/AI协助记录.txt b/w5/AI协助记录.txt
new file mode 100644
index 0000000..e69de29
diff --git a/w5/Shapetest.java b/w5/Shapetest.java
new file mode 100644
index 0000000..2e4bc96
--- /dev/null
+++ b/w5/Shapetest.java
@@ -0,0 +1,38 @@
+package com.example.shape;
+
+class Shape {
+    public void draw() {
+        System.out.println("绘制形状");
+    }
+}
+
+class Circle extends Shape {
+    @Override
+    public void draw() {
+        System.out.println("绘制圆形");
+    }
+}
+
+class Rectangle extends Shape {
+    @Override
+    public void draw() {
+        System.out.println("绘制矩形");
+    }
+}
+
+public class Shapetest {
+    public static void drawShape(Shape s) {
+        s.draw();
+    }
+    
+    public static void main(String[] args) {
+        Shape circle = new Circle();
+        drawShape(circle);
+        
+        Shape rectangle = new Rectangle();
+        drawShape(rectangle);
+        
+        Shape general = new Shape();
+        drawShape(general);
+    }
+}
\ No newline at end of file
diff --git a/w5/程序运行截图.png b/w5/程序运行截图.png
new file mode 100644
index 0000000..f6d56fc
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