如何使用prepareStatement update指定字段与IsNull的整型和双精度？

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

public class UpdateExample {
    public static void main(String[] args) {
        String url = "jdbc:mysql://localhost:3306/mydatabase";
        String username = "root";
        String password = "password";
        
        try {
            // 创建数据库连接
            Connection connection = DriverManager.getConnection(url, username, password);
            
            // 准备SQL语句
            String sql = "UPDATE mytable SET field1 = ?, field2 = ? WHERE id = ?";
            PreparedStatement statement = connection.prepareStatement(sql);
            
            // 设置参数
            int intValue = 10;
            double doubleValue = 3.14;
            int id = 1;
            statement.setInt(1, intValue);
            statement.setDouble(2, doubleValue);
            statement.setInt(3, id);
            
            // 执行更新
            int rowsAffected = statement.executeUpdate();
            System.out.println("Rows affected: " + rowsAffected);
            
            // 关闭连接
            statement.close();
            connection.close();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}