From 24a3a24382a781ddb2e2b4cf33266634a72dc89a Mon Sep 17 00:00:00 2001
From: xuxin <840198532@qq.com>
Date: Mon, 21 Sep 2026 10:44:04 +0800
Subject: [PATCH] =?UTF-8?q?day06--=E9=9D=A2=E5=90=91=E5=AF=B9=E8=B1=A1?=
 =?UTF-8?q?=E4=B9=8B=E5=B0=81=E8=A3=85=5F=E6=A6=82=E8=BF=B0=E5=92=8C?=
 =?UTF-8?q?=E6=AD=A5=E9=AA=A4?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 day06/src/com/inmind/private02/Demo03.java  | 21 ++++++++++++
 day06/src/com/inmind/private02/Student.java | 37 +++++++++++++++++++++
 2 files changed, 58 insertions(+)
 create mode 100644 day06/src/com/inmind/private02/Demo03.java
 create mode 100644 day06/src/com/inmind/private02/Student.java

diff --git a/day06/src/com/inmind/private02/Demo03.java b/day06/src/com/inmind/private02/Demo03.java
new file mode 100644
index 0000000..31f81fd
--- /dev/null
+++ b/day06/src/com/inmind/private02/Demo03.java
@@ -0,0 +1,21 @@
+package com.inmind.private02;
+
+public class Demo03 {
+    public static void main(String[] args) {
+        //创建一个学生对象
+        Student s = new Student();
+        //其他类无法对private私有化属性进行随意的访问了！！！
+        /*s.name = "张三";
+        s.age = 120;*/
+        s.setName("张三");
+        s.setAge(21);
+        showStudent(s);
+    }
+
+    public static void showStudent(Student s){
+        /*System.out.println(s.name);
+        System.out.println(s.age);*/
+        System.out.println(s.getName());
+        System.out.println(s.getAge());
+    }
+}
diff --git a/day06/src/com/inmind/private02/Student.java b/day06/src/com/inmind/private02/Student.java
new file mode 100644
index 0000000..e71448e
--- /dev/null
+++ b/day06/src/com/inmind/private02/Student.java
@@ -0,0 +1,37 @@
+package com.inmind.private02;
+
+/*
+面向对象之封装的作用：代码的安全性
+如何封装???
+封装的步骤
+1. 使用 private 关键字来修饰成员变量。
+2. 对需要访问的成员变量，提供对应的一对 getXxx 方法 、setXxx 方法。
+ */
+public class Student {
+    private String name;
+    private int age;
+
+    //定义一对get/set方法对私有的，允许访问的 属性进行操作
+    public String getName(){
+        return name;
+    }
+
+    public void setName(String n){
+        name = n;
+    }
+
+
+    public int getAge(){
+        return age;
+    }
+
+    public void setAge(int a){
+        if (a > 100 || a < 0) {
+            System.out.println("您输入的年龄有误，只能是0~100");
+            //此处直接将方法结束即可
+            return;
+        }
+        age = a;
+    }
+
+}