From c55ffbfab1339d333286f45513b4b929c434eb08 Mon Sep 17 00:00:00 2001
From: xuxin <840198532@qq.com>
Date: Sat, 23 May 2026 10:35:03 +0800
Subject: [PATCH] =?UTF-8?q?day09-=E7=BB=A7=E6=89=BF=E4=B8=ADsuper=E5=85=B3?=
 =?UTF-8?q?=E9=94=AE=E5=AD=97?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../inmind/extends_constructor04/Demo05.java    |  2 ++
 .../com/inmind/extends_constructor04/Fu.java    |  6 +++++-
 .../com/inmind/extends_constructor04/Zi.java    | 17 +++++++++++++++++
 3 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/day09/src/com/inmind/extends_constructor04/Demo05.java b/day09/src/com/inmind/extends_constructor04/Demo05.java
index c2be63e..db01ca4 100644
--- a/day09/src/com/inmind/extends_constructor04/Demo05.java
+++ b/day09/src/com/inmind/extends_constructor04/Demo05.java
@@ -11,6 +11,8 @@ public class Demo05 {
         Zi zi = new Zi();
         //创建父类对象
         Fu fu = new Fu(10);
+        System.out.println("--------------------------------");
+        zi.methodZi();
 
         System.out.println("程序结束");
     }
diff --git a/day09/src/com/inmind/extends_constructor04/Fu.java b/day09/src/com/inmind/extends_constructor04/Fu.java
index f69f3b8..98965e1 100644
--- a/day09/src/com/inmind/extends_constructor04/Fu.java
+++ b/day09/src/com/inmind/extends_constructor04/Fu.java
@@ -1,7 +1,7 @@
 package com.inmind.extends_constructor04;
 
 public class Fu {
-    int num;
+    int num = 100;
 
     //父类的无参构造方法
     public Fu(){
@@ -13,4 +13,8 @@ public class Fu {
         System.out.println("父类有参构造方法");
         this.num = num;
     }
+
+    public void methodFu() {
+        System.out.println("父类的成员方法执行了");
+    }
 }
diff --git a/day09/src/com/inmind/extends_constructor04/Zi.java b/day09/src/com/inmind/extends_constructor04/Zi.java
index 15c63b9..8f62ac4 100644
--- a/day09/src/com/inmind/extends_constructor04/Zi.java
+++ b/day09/src/com/inmind/extends_constructor04/Zi.java
@@ -1,9 +1,26 @@
 package com.inmind.extends_constructor04;
 
+
+/*
+super可以表示父类的引用（对象）
+super三个使用操作：
+1.super,可以在子类的成员方法中，访问父类的成员变量，格式super.父类成员变量
+2.super,可以在子类的成员方法中，访问父类的成员方法，格式：super.父类成员方法名(参数列表)
+3.super,可以在子类的构造方法中，访问父类的构造方法，格式：super(参数列表)
+
+ */
 public class Zi extends Fu{//子类继承了父类，拥有了父类的非私有的成员
 
     public Zi(){
         //super(10);//注意：如果不写该行代码，编译器会自动添加super()，调用父类的无参构造，并且必须在第一行
+        super();
         System.out.println("子类的无参构造方法");
     }
+
+    //子类的成员方法
+    public void methodZi(){
+        System.out.println("父类的成员变量num："+super.num);
+        //调用父类的成员方法
+        super.methodFu();
+    }
 }