diff --git "a/32 \351\202\223\347\220\252/20230517 JDBC.md" "b/32 \351\202\223\347\220\252/20230517 JDBC.md"
new file mode 100644
index 0000000000000000000000000000000000000000..f4a2b13f2ffb44dee738f16d7cf003d9a26a2c06
--- /dev/null
+++ "b/32 \351\202\223\347\220\252/20230517 JDBC.md"	
@@ -0,0 +1,169 @@
+### JDBC作业：
+
+1. MySQL中创建一个数据库student_db
+
+2. 库中创建student表
+
+3. 表中数据如下
+
+4. | 编号 | 姓名 | 性别 |
+   | ---- | ---- | ---- |
+   | 1    | 张三 | 男   |
+   | 2    | 李四 | 女   |
+   | 3    | 王五 | 男   |
+
+   ~~~MySQL
+   create database student_db default char set utf8;
+   use student_db;
+   create table student_db  (
+       id int ,
+       name varchar(10),
+       sex char
+       );
+   insert into student_db values
+       (1,'张三','男'),
+       (2,'李四','女'),
+       (3,'王五','男');
+   ~~~
+
+   
+
+5. 编写java 4个类，分别实现以下功能
+
+   1. 查询功能，查询student中所有数据
+   2. 添加功能
+   3. 修改功能
+   4. 删除功能
+
+6. 扩展题【预习题】
+
+   1. 能否实现一个类中，用四个方法来实现上面4个类的功能
+   2. 能否实现将查询的结果，封装成java对象
+
+   ~~~java
+   import java.sql.*;
+   
+   public class Jdbc {
+       public static void main(String[] args) {
+           try {
+               select();//查询
+               update();//修改
+               insert();//添加
+               delete();//删除
+           } catch (SQLException e) {
+               throw new RuntimeException(e);
+           } catch (ClassNotFoundException e) {
+               throw new RuntimeException(e);
+           }
+   
+       }
+       public static void select() throws SQLException, ClassNotFoundException {
+           //1.注册驱动
+           Class.forName("com.mysql.jdbc.Driver");
+           //2.获取连接对象
+           String url = "jdbc:mysql://localhost:3306/student_db?useSSL=false&useUnicode=true&characterEncoding=utf8";
+           String username = "root";
+           String password = "root";
+           Connection conn = DriverManager.getConnection(url,username,password);
+           //3.定义SQL
+           String sql = "select * from sonyang;";
+   
+           //4.获取执行SQL
+           Statement st = conn.createStatement();
+   
+           //5.执行SQL
+           ResultSet rs = st.executeQuery(sql);
+           //6.处理返回结果
+           System.out.println("id      "+"name");
+           while (rs.next()){
+               int id = rs.getInt("id");
+               String name  = rs.getString("name");
+               System.out.println(id+"       "+name);
+           }
+           //7.释放资源
+           rs.close();
+           st.close();
+           conn.close();
+       }
+       public static void update() throws SQLException, ClassNotFoundException {
+           //1.注册驱动
+           Class.forName("com.mysql.jdbc.Driver");
+           //2.获取连接对象
+           String url = "jdbc:mysql://localhost:3306/student_db?useSSL=false&useUnicode=true&characterEncoding=utf8";
+           String username = "root";
+           String password = "root";
+           Connection conn = DriverManager.getConnection(url,username,password);
+           //3.定义SQL
+           String sql = "update sonyang set name = '宋扬2号'where id=1";
+   
+           //4.获取执行SQL
+           Statement st = conn.createStatement();
+   
+           //5.执行SQL
+           int i = st.executeUpdate(sql);
+           //6.处理返回结果
+          if (i>0){
+              System.out.println("修改成功");
+          }else {
+              System.out.println("修改失败");
+          }
+           //7.释放资源
+           st.close();
+           conn.close();
+       }
+       public static void insert() throws ClassNotFoundException, SQLException {
+           //1.注册驱动
+           Class.forName("com.mysql.jdbc.Driver");
+           //2.获取连接对象
+           String url = "jdbc:mysql://localhost:3306/student_db?useSSL=false&useUnicode=true&characterEncoding=utf8";
+           String username = "root";
+           String password = "root";
+           Connection conn = DriverManager.getConnection(url,username,password);
+           //3.定义SQL
+           String sql = "insert into sonyang values (2,'邓琪plus')";
+           //4.获取执行SQL
+           Statement st = conn.createStatement();
+   
+           //5.执行SQL
+           int i = st.executeUpdate(sql);
+           //6.处理返回结果
+           if (i>0){
+               System.out.println("添加"+i+"行数据成功");
+           }else {
+               System.out.println("添加失败");
+           }
+           //7.释放资源
+           st.close();
+           conn.close();
+       }
+       public static void delete() throws ClassNotFoundException, SQLException {
+           //1.注册驱动
+           Class.forName("com.mysql.jdbc.Driver");
+           //2.获取连接对象
+           String url = "jdbc:mysql://localhost:3306/student_db?useSSL=false&useUnicode=true&characterEncoding=utf8";
+           String username = "root";
+           String password = "root";
+           Connection conn = DriverManager.getConnection(url,username,password);
+           //3.定义SQL
+           String sql = "delete from sonyang where name='张三'";
+           //4.获取执行SQL
+           Statement st = conn.createStatement();
+           //5.执行SQL
+           int i = st.executeUpdate(sql);
+           //6.处理返回结果
+           if (i>0){
+               System.out.println("删除了"+i+"行数据成功");
+           }else {
+               System.out.println("删除失败");
+           }
+           //7.释放资源
+           st.close();
+           conn.close();
+   
+       }
+   }
+   
+   ~~~
+
+   
+