From 6a790d9ab55694cb6970e72ab0126ef315c5df84 Mon Sep 17 00:00:00 2001
From: xuxin <840198532@qq.com>
Date: Fri, 26 Dec 2025 15:29:17 +0800
Subject: [PATCH] =?UTF-8?q?day06-=E9=9D=A2=E5=90=91=E5=AF=B9=E8=B1=A1--?=
 =?UTF-8?q?=E5=B0=81=E8=A3=85-private?=
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---
 .../com/inmind/object_private03/Student.java  | 43 +++++++++++++++++++
 .../inmind/object_private03/StudentTest.java  | 31 +++++++++++++
 2 files changed, 74 insertions(+)
 create mode 100644 day06/src/com/inmind/object_private03/Student.java
 create mode 100644 day06/src/com/inmind/object_private03/StudentTest.java

diff --git a/day06/src/com/inmind/object_private03/Student.java b/day06/src/com/inmind/object_private03/Student.java
new file mode 100644
index 0000000..ebd8025
--- /dev/null
+++ b/day06/src/com/inmind/object_private03/Student.java
@@ -0,0 +1,43 @@
+package com.inmind.object_private03;
+
+public class Student {
+    private String name;
+    private int age = 20;
+    private int id;
+
+    //学习
+    public void study(String book) {
+        System.out.println("学号："+id+",姓名："+name+",年龄为"+age+"岁的学生在学"+book);
+    }
+
+    //封装的get/set方法针对对应的属性的！！！
+    public String getName(){
+        return name;
+    }
+
+    public void setName(String n){
+        name = n;
+    }
+
+    public int getAge(){
+        return age;
+    }
+
+    public void setAge(int a){
+        //增加数据的安全性的判断功能
+        if (a < 1||a>120) {
+            System.out.println("您输入的年龄非法的");
+            return;
+        }
+        age = a;
+    }
+
+    public int getId(){
+        return id;
+    }
+
+    public void setId(int i){
+        id = i;
+    }
+
+}
diff --git a/day06/src/com/inmind/object_private03/StudentTest.java b/day06/src/com/inmind/object_private03/StudentTest.java
new file mode 100644
index 0000000..57571a8
--- /dev/null
+++ b/day06/src/com/inmind/object_private03/StudentTest.java
@@ -0,0 +1,31 @@
+package com.inmind.object_private03;
+/*
+
+为了学生类的代码的安全性，要使用封装
+封装的步骤：
+1.使用private修饰符
+2.提供对应属性的getXXX+setXXX方法
+
+private：权限修饰符，最小一个权限，被它修饰的内容只能够在本类中访问,
+        private只能修饰成员变量和成员方法,表示私有化。
+成员方法：处于成员位置的非静态方法。
+非静态：不被static修饰的方法
+ */
+public class StudentTest {
+    public static void main(String[] args) {
+        //创建一个学生对象
+        Student s = new Student();
+        s.study("java");
+        //s.属性 = 值
+        //对象的属性的设置值
+        s.setId(1);
+        s.setAge(-20);
+        s.setName("李四");
+
+        s.study("java");
+        //对象的属性的获取值
+        System.out.println(s.getAge());
+        System.out.println(s.getId());
+        System.out.println(s.getName());
+    }
+}