From 0fedea922d1f431aecf73ac70bd025184eb8ce05 Mon Sep 17 00:00:00 2001
From: xuxin <840198532@qq.com>
Date: Thu, 22 Jan 2026 14:25:26 +0800
Subject: [PATCH] =?UTF-8?q?day09-=E7=BB=A7=E6=89=BF=E4=B8=AD=E6=96=B9?=
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---
 .../com/inmind/extends_override03/Demo03.java | 20 +++++++++++++++++++
 .../src/com/inmind/extends_override03/Fu.java |  8 ++++++++
 .../src/com/inmind/extends_override03/Zi.java |  9 +++++++++
 3 files changed, 37 insertions(+)
 create mode 100644 day09/src/com/inmind/extends_override03/Demo03.java
 create mode 100644 day09/src/com/inmind/extends_override03/Fu.java
 create mode 100644 day09/src/com/inmind/extends_override03/Zi.java

diff --git a/day09/src/com/inmind/extends_override03/Demo03.java b/day09/src/com/inmind/extends_override03/Demo03.java
new file mode 100644
index 0000000..e1a884a
--- /dev/null
+++ b/day09/src/com/inmind/extends_override03/Demo03.java
@@ -0,0 +1,20 @@
+package com.inmind.extends_override03;
+/*
+继承中的重写：
+重载(overload):在同一个类中，方法名相同，参数列表不同
+重写(override)：在父子类中，方法名相同，参数列表相同（重写，覆盖重写，覆写）
+
+成员方法的访问特点：在父子类中，通过对象去访问成员方法，new后面是谁，优先使用谁的成员方法，没有则向上找
+
+成员变量看 = 左边
+成员方法看 = 右边 的new
+
+
+重写的注意事项：
+权限：public>protected>(default)不写就是默认>private
+1. 子类方法覆盖父类方法，必须要保证权限大于等于父类权限。
+2.private的内容不能被继承，所以也就没有重写概念
+3.返回值类型、方法名和参数类型必须一致
+ */
+public class Demo03 {
+}
diff --git a/day09/src/com/inmind/extends_override03/Fu.java b/day09/src/com/inmind/extends_override03/Fu.java
new file mode 100644
index 0000000..6e1456e
--- /dev/null
+++ b/day09/src/com/inmind/extends_override03/Fu.java
@@ -0,0 +1,8 @@
+package com.inmind.extends_override03;
+
+public class Fu {
+    public void method(){
+        System.out.println("父类的method方法");
+    }
+
+}
diff --git a/day09/src/com/inmind/extends_override03/Zi.java b/day09/src/com/inmind/extends_override03/Zi.java
new file mode 100644
index 0000000..1460c81
--- /dev/null
+++ b/day09/src/com/inmind/extends_override03/Zi.java
@@ -0,0 +1,9 @@
+package com.inmind.extends_override03;
+
+public class Zi extends Fu{
+
+    @Override //该注解的作用：判断当前是否是一个重写的方法
+     public void method(){
+        System.out.println("父类的method方法");
+    }
+}