From 505430da0c9eab5067f5bbc340537cb48cf6d1ee Mon Sep 17 00:00:00 2001
From: Wangyanshu <2680603193@qq.com>
Date: Thu, 7 May 2026 15:06:14 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=20'=E5=9F=BA=E7=A1=80?=
 =?UTF-8?q?=E9=A2=98'?=
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---
 基础题 | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 基础题

diff --git a/基础题 b/基础题
new file mode 100644
index 0000000..7c4a9a9
--- /dev/null
+++ b/基础题
@@ -0,0 +1,39 @@
+// 父类 Shape
+public class Shape {
+    public void draw() {
+        System.out.println("绘制一个图形");
+    }
+}
+
+// 子类 Circle
+public class Circle extends Shape {
+    @Override
+    public void draw() {
+        System.out.println("绘制一个圆形 ○");
+    }
+}
+
+// 子类 Rectangle
+public class Rectangle extends Shape {
+    @Override
+    public void draw() {
+        System.out.println("绘制一个矩形 ▭");
+    }
+}
+
+// 测试主类
+public class ShapeTest {
+    // 题目要求：drawShape 方法，接收 Shape 类型参数
+    public static void drawShape(Shape s) {
+        s.draw(); // 多态调用
+    }
+
+    public static void main(String[] args) {
+        Shape circle = new Circle();
+        Shape rect = new Rectangle();
+
+        System.out.println("=== 基础题测试 ===");
+        drawShape(circle);
+        drawShape(rect);
+    }
+}
\ No newline at end of file