File f = new File("d:\\ibatis.log");

        File f1 = new File("d:\\ibatis2.log");

        byte b[] = new byte[1024];

        int l = 0;

        char c[] = new char[1024];

        String str = "";

        try

        {

            /**

             * 文件复制方法1

             */

            FileInputStream fis = new FileInputStream(f);

            FileOutputStream fos = new FileOutputStream(f1);

            while ((l = fis.read(b)) > 0)

            {

                fos.write(b);

            }

            /**

             * 文件复制方法2

             */

            FileReader fr = new FileReader(f);

            FileWriter fw = new FileWriter(f1);

            

            while ((l = fr.read(c)) > 0)

            {

                fw.write(c);

            }

            /**

             * 文件复制方法3

             */

            BufferedReader br = new BufferedReader(new InputStreamReader(fis));

            BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(fos));

            while ((str = br.readLine()) != null)

            {

                bw.write(str);

            }

            

        }

        catch (IOException e)

        {

            e.printStackTrace();

        }