commit 15d177f1a2a8093521047d866fd50d9b09eb273d
Author: ZhengJiayin <13230092115@163.com>
Date:   Fri Apr 3 17:03:05 2026 +0800

    提交ShapeTest.java图形类代码

diff --git a/ShapeTest.java b/ShapeTest.java
new file mode 100644
index 0000000..26785a5
--- /dev/null
+++ b/ShapeTest.java
@@ -0,0 +1,41 @@
+// 父类 Shape
+class Shape {
+    // 父类 draw 方法，子类重写
+    public void draw() {
+        System.out.println("绘制通用图形");
+    }
+}
+
+// 子类 Circle，重写 draw 方法
+class Circle extends Shape {
+    @Override
+    public void draw() {
+        System.out.println("绘制圆形");
+    }
+}
+
+// 子类 Rectangle，重写 draw 方法
+class Rectangle extends Shape {
+    @Override
+    public void draw() {
+        System.out.println("绘制矩形");
+    }
+}
+
+// 主类，包含 drawShape 方法和 main 方法
+public class ShapeTest {
+    // 多态方法：接收 Shape 类型参数，调用其 draw 方法
+    public static void drawShape(Shape s) {
+        s.draw();
+    }
+
+    // main 方法，程序入口
+    public static void main(String[] args) {
+        // 测试：创建子类对象，传入 drawShape 方法
+        Shape circle = new Circle();
+        Shape rectangle = new Rectangle();
+
+        drawShape(circle);
+        drawShape(rectangle);
+    }
+}
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