如何将java字符串插入到数据库表中？

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;

public class InsertStringToDatabase {
    public static void main(String[] args) {
        Connection connection = null;
        PreparedStatement preparedStatement = null;
        
        try {
            // 1. 连接数据库
            connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/mydatabase", "username", "password");
            
            // 2. 创建SQL语句
            String sql = "INSERT INTO mytable (column1) VALUES (?)";
            
            // 3. 创建PreparedStatement对象
            preparedStatement = connection.prepareStatement(sql);
            
            // 4. 设置参数
            String javaString = "Hello, World!";
            preparedStatement.setString(1, javaString);
            
            // 5. 执行插入操作
            int rowsInserted = preparedStatement.executeUpdate();
            System.out.println(rowsInserted + " rows inserted.");
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            // 6. 关闭连接
            try {
                if (preparedStatement != null) {
                    preparedStatement.close();
                }
                if (connection != null) {
                    connection.close();
                }
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }
}