如何读取pdf文件并将其写入outputStream

import java.io.*;

public class FileRead {    public static void main(String[] args) throws IOException {        File f=new File("C:\documents and Settings\abc\Desktop\abc.pdf");        OutputStream oos = new FileOutputStream("test.pdf");        byte[] buf = new byte[8192];        InputStream is = new FileInputStream(f);        int c = 0;        while ((c = is.read(buf, 0, buf.length)) > 0) { oos.write(buf, 0, c); oos.flush();        }        oos.close();        System.out.println("stop");        is.close();    }}

到目前为止最简单的方法。希望这可以帮助。