Exception in thread "main" java.io.FileNotFoundException: src (拒绝访问。)

package day09;

import java.io.*;

public class FileCopyTools {
public static void main(String[] args) throws IOException {
copyFile("E:\ReferenceCard.pdf","E:\aa.pdf");
}

public static void copyFile(String src,String des) throws IOException {
    FileInputStream fis = new FileInputStream("src");
    BufferedInputStream bis = new BufferedInputStream(fis);
    FileOutputStream fos = new FileOutputStream("des");
    BufferedOutputStream bos = new BufferedOutputStream(fos);

    int temp = 0;
    while ((temp = bis.read()) !=-1){
        bos.write(temp);
    }
    bos.flush();

}

}
请教一下，谢谢！

没看懂你的操作，你的src应该是目录吧，你不是要读文件吗？你这两个地方填的应该是文件名

估计是反斜杠的问题吧，路径用反斜杠需要连续用两个，一个是转义符，或者直接用正斜杠/，用一个就可以