From 9d9eb426e7a39b1c71a95bb5a4b60444401fdfcc Mon Sep 17 00:00:00 2001
From: xuxin <840198532@qq.com>
Date: Tue, 6 Jan 2026 11:51:33 +0800
Subject: [PATCH] =?UTF-8?q?day09--=E6=8A=BD=E8=B1=A1=E7=B1=BB=E7=9A=84?=
 =?UTF-8?q?=E7=BB=83=E4=B9=A0?=
MIME-Version: 1.0
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---
 day09/src/com/inmind/abstract06/test/Demo09.java |  3 +++
 day09/src/com/inmind/abstract06/test/Square.java | 10 ++++++++++
 2 files changed, 13 insertions(+)
 create mode 100644 day09/src/com/inmind/abstract06/test/Square.java

diff --git a/day09/src/com/inmind/abstract06/test/Demo09.java b/day09/src/com/inmind/abstract06/test/Demo09.java
index c2b0323..0d28fdc 100644
--- a/day09/src/com/inmind/abstract06/test/Demo09.java
+++ b/day09/src/com/inmind/abstract06/test/Demo09.java
@@ -24,5 +24,8 @@ public class Demo09 {
         System.out.println("圆形的周长："+circle.getZC());
 
         //如何快速定义出一个正方型的类，还不用自己实现周长和面积的方法
+        Square square = new Square(2);
+        System.out.println("正方形形的面积："+square.getArea());
+        System.out.println("正方形形的周长："+square.getZC());
     }
 }
diff --git a/day09/src/com/inmind/abstract06/test/Square.java b/day09/src/com/inmind/abstract06/test/Square.java
new file mode 100644
index 0000000..54961eb
--- /dev/null
+++ b/day09/src/com/inmind/abstract06/test/Square.java
@@ -0,0 +1,10 @@
+package com.inmind.abstract06.test;
+
+public class Square extends Rectangle{
+
+    //定义一个有参构造，必须要求传入边长，交给父类来管理
+    public Square(int bc){
+        super(bc,bc);
+    }
+
+}