对象创建，表结构就会自动生成

1.目录

2.User.java

 1 package com.itheima.domain;
 2 
 3 public class User {
 4 
 5     private Integer id;
 6     private String name;
 7     private Integer age;
 8     public Integer getId() {
 9         return id;
10     }
11     public void setId(Integer id) {
12         this.id = id;
13     }
14     public String getName() {
15         return name;
16     }
17     public void setName(String name) {
18         this.name = name;
19     }
20     public Integer getAge() {
21         return age;
22     }
23     public void setAge(Integer age) {
24         this.age = age;
25     }
26     
27 }

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