增加jdbc中的值

Question

我有一个名为DatabaseInterface的类，我在那里创建了我的表，其中get Customer作为一种方法，如下所示：

  public static Customer getCustomer(long id) {

        System.out.println("Get customer " + id);

        Customer customer = new Customer();

        try {
            statement = connection.createStatement();
            resultSet = statement.executeQuery("SELECT * FROM customer where id = " + id);

            if (resultSet.next())

            {
                long cId = resultSet.getLong("id");
                String name = resultSet.getString("name");
                long tagNo = resultSet.getLong("tagNo");
                String email = resultSet.getString("EMAIL");
                String telephoneNo = resultSet.getString("telephoneNo");
                int noOfTimesRecycled = resultSet.getInt("No of Times Recycled");

                customer = buildCustomer(cId, name, tagNo, telephoneNo, email, noOfTimesRecycled);

                System.out.println(customer);
            }

        } catch (SQLException ex) {
            System.out.println("Error in getting customer");
            ex.printStackTrace();
        }

        return customer;
    }

我有一个文本文件，它读取tagNo的值，每次有一个标签的新条目时，它会增加noOfTimesRecycled的值。 我在一个名为UpdateTag的新类中这样做。所以我首先从DatabaseInterface类调用了方法getCustomer，然后继续更新，但是收到错误。

    package com.qmul.rfid.service;
import java.util.List;
import com.qmul.rfid.dataaccess.DatabaseInterface;
//import com.qmul.rfid.dom.Customer;

import com.qmul.rfid.reader.ImportTagJob;


public class UpdateTag {

List<String> fileList = ImportTagJob.fetchData();

{

    try{

         for (String tag : fileList)
         {
             DatabaseInterface.getCustomer(long id); //Getting error on long id -Syntax error on token "long", delete this token         
                    System.out.println(tag);     
         }
       } 
    catch (IllegalArgumentException ex)
            {
                ex.printStackTrace();
            }

}
}

知道为什么吗？