Java I/O流与数据库连接如何集成？

import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class FileDBIntegration {

    public static void main(String[] args) {
        // 建立数据库连接
        Connection conn = null;
        Statement stmt = null;
        try {
            conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/database", "user", "password");
            stmt = conn.createStatement();
        } catch (SQLException e) {
            e.printStackTrace();
            return;
        }

        // 读取文件数据
        File file = new File("data.txt");
        try (FileReader reader = new FileReader(file)) {
            int data;
            while ((data = reader.read()) != -1) {
                // 执行SQL语句将数据写入数据库
                String sql = "INSERT INTO table (column) VALUES (" + data + ")";
                stmt.executeUpdate(sql);
            }
        } catch (IOException | SQLException e) {
            e.printStackTrace();
        } finally {
            // 关闭连接和语句对象
            try {
                if (stmt != null) { stmt.close(); }
                if (conn != null) { conn.close(); }
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }
}