diff --git "a/work/com/java/minxi/java_20240524/java_2302_\351\273\204\344\277\212\346\264\201_2344310247/Main.java" "b/work/com/java/minxi/java_20240524/java_2302_\351\273\204\344\277\212\346\264\201_2344310247/Main.java"
new file mode 100644
index 0000000000000000000000000000000000000000..790b590fc76cb87ccb202dd01fa9eb047417c399
--- /dev/null
+++ "b/work/com/java/minxi/java_20240524/java_2302_\351\273\204\344\277\212\346\264\201_2344310247/Main.java"
@@ -0,0 +1,75 @@
+package com.java.minxi.java_20240524.java_2302_黄俊洁_2344310247;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.ResultSet;
+import java.sql.Statement;
+
+public class Main {
+    public static void main(String[] args) throws Exception {
+        Main1();
+        Main2();
+        Main3();
+
+    }
+    private static void Main1() throws Exception{
+        String url="jdbc:mysql://student?serverTimezone=Asia/Shanghai";
+        String username="root";
+        String password="123456";
+        Connection connection= DriverManager.getConnection(url,username,password);
+        String sql= "select * from teacher_info;";
+        Statement statement= connection.createStatement();
+        ResultSet resultSet= statement.executeQuery(sql);
+        System.out.println("所以用户的信息");
+        System.out.println("id\t\t teacher_name\t teach_age");
+        while (resultSet.next()){
+            int id = resultSet.getInt("id");
+            String name = resultSet.getString("teacher_name");
+            int age = resultSet.getInt("teacher_age");
+            System.out.println(id+"\t\t"+name+"\t\t"+age);
+        }
+        System.out.println();
+        resultSet.close();
+        statement.close();
+        connection.close();
+
+    }
+    private static void Main2() throws Exception{
+        String url="jdbc:mysql://student?serverTimezone=Asia/Shanghai";
+        String username="root";
+        String password="123456";
+        Connection connection= DriverManager.getConnection(url,username,password);
+        String sql= "select * from teacher_info where id = 1&& teacher_age+35;";
+        Statement statement= connection.createStatement();
+        ResultSet resultSet= statement.executeQuery(sql);
+        System.out.println("id=1，且年龄为35的用户");
+        System.out.println("id\t\t teacher_name\t teach_age");
+        while (resultSet.next()){
+            int id = resultSet.getInt(1);
+            String name = resultSet.getString(2);
+            int age = resultSet.getInt(3);
+            System.out.println(id+"\t\t"+name+"\t\t"+age);
+        }
+        System.out.println();
+        resultSet.close();
+        statement.close();
+        connection.close();
+
+    }
+    private static void Main3() throws Exception{
+        String url="jdbc:mysql://student?serverTimezone=Asia/Shanghai";
+        String username="root";
+        String password="123456";
+        Connection connection= DriverManager.getConnection(url,username,password);
+        String sql ="update teacher_info set teacher_name='小严' where id =3";
+        Statement statement= connection.createStatement();
+        int i = statement.executeUpdate(sql);
+        if (i>0){
+            System.out.println("修改成功");
+        }else{
+            System.out.println("修改失败");
+        }
+        statement.close();
+        connection.close();
+    }
+}
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