java之封装

 1 package com.oracle.demo01;
 2 
 3 public class School {
 4     
 5     public static void main(String[] args) {
 6         //创建对象
 7         Teacher t = new Teacher();
 8         //调用方法
 9         t.setName("LZ");
10         t.setAge(13);
11         t.shuchu();
12         //取值
13         System.out.println(t.getAge()+"..."+t.getName());
14     }
15 
16 }

 1 package com.oracle.demo01;
 2 //创建一个类
 3 public class Teacher {
 4     //私有化 属性
 5     private String name;
 6     private int    age ;
 7     //用方法去赋值
 8     public void setAge(int a){
 9         age = a;
10     }
11     public void setName(String n){
12         name = n;
13     }
14     //用方法取值
15     public int getAge(){
16         return age;
17     }
18     public String getName(){
19         return name;
20     }
21     //输出控制台
22     public void shuchu(){
23         
24         System.out.println("老师的名字是"+name+",年龄是"+age);
25     }
26     
27 }