在java中创建CSV文件，为了正确的CSV输出，我应该替换字符串中的哪个字符？

import java.io.FileWriter;
import java.io.IOException;

public class CreateCSV {
    public static void main(String[] args) {
        String filePath = "path/to/csv/file.csv";
        
        try (FileWriter writer = new FileWriter(filePath)) {
            // 写入CSV文件头部
            writer.append("Name, Age, City\n");
            
            // 写入数据行
            writer.append("John, 25, New York\n");
            writer.append("Alice, 30, London\n");
            writer.append("Bob, 35, Paris\n");
            
            writer.flush();
            System.out.println("CSV文件创建成功！");
        } catch (IOException e) {
            System.out.println("创建CSV文件失败：" + e.getMessage());
        }
    }
}