diff --git "a/work/com/java/minxi/java_20240524/java_\346\235\216\345\260\221\350\275\251_2344310239/Jkl.java" "b/work/com/java/minxi/java_20240524/java_\346\235\216\345\260\221\350\275\251_2344310239/Jkl.java"
new file mode 100644
index 0000000000000000000000000000000000000000..228e6568b51aae3c41224fe30d98acc0ebdc1432
--- /dev/null
+++ "b/work/com/java/minxi/java_20240524/java_\346\235\216\345\260\221\350\275\251_2344310239/Jkl.java"
@@ -0,0 +1,81 @@
+package java2302.work.com.java.minxi.java_20240524.java_李少轩_2344310239;
+
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.ResultSet;
+import java.sql.Statement;
+public class Jkl {
+    public static void main(String[] args) {
+         class Main {
+            public static void main(String[] args) throws Exception {
+                Main_1();
+                Main_2();
+                Main_3();
+            }
+
+            private static void Main_3() 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();
+            }
+
+            private static void Main_2() 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为1，且年龄为35岁的用户：");
+                System.out.println("id teacher_name teacher_age");
+                while (resultSet.next()) {
+                    int id = resultSet.getInt(1);
+                    String name = resultSet.getString(2);
+                    int age = resultSet.getInt(3);
+                    System.out.println(id+name + age);
+                }
+                System.out.println();
+                resultSet.close();
+                statement.close();
+                connection.close();
+            }
+
+            private static void Main_1() 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("所有用户信息");
+                System.out.println("id teacher_name teacher_age");
+                while (resultSet.next()) {
+                    int id = resultSet.getInt("id");
+                    String name = resultSet.getNString("teacher_name");
+                    int age = resultSet.getInt("teacher_age");
+                    System.out.println(id + name + age);
+                }
+                System.out.println();
+                resultSet.close();
+                statement.close();
+                connection.close();
+
+            }
+        }
+
+    }
+}