如何在java sql中获取列的最大整数值？

String sql = "SELECT MAX(column_name) FROM table_name";

import java.sql.*;

public class Main {
    public static void main(String[] args) {
        String url = "jdbc:mysql://localhost:3306/database_name";
        String username = "username";
        String password = "password";

        try (Connection conn = DriverManager.getConnection(url, username, password);
             Statement stmt = conn.createStatement()) {
            String sql = "SELECT MAX(column_name) FROM table_name";
            ResultSet rs = stmt.executeQuery(sql);

            if (rs.next()) {
                int maxIntValue = rs.getInt(1);
                System.out.println("Max integer value: " + maxIntValue);
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}