文件读写操作

     /** 通过IO进行批量读写 */
        byte[] array = new byte[512];
        FileInputStream fin3 = null;
        FileOutputStream fout3 = null;
        try
        {
            fin3 = new FileInputStream(srcFilePathName);
            fout3 = new FileOutputStream(targetFilePathName);
            start = System.currentTimeMillis();
            while (fin3.read(array) != -1)
            {
                fout3.write(array);
            }
        }
        catch (FileNotFoundException e)
        {
            e.printStackTrace();
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }
        finally
        {
            try
            {
                fin3.close();
                fout3.close();
            }
            catch (IOException e)
            {
                e.printStackTrace();
            }
        }
        end = System.currentTimeMillis();
        long time3 = end - start;
        System.out.println("IO_byteArray: " + time3);

        /** 通过IO Buffer实现文件读写 */
        FileInputStream fin4 = null;
        FileOutputStream fout4 = null;
        BufferedInputStream bufferInput = null;
        BufferedOutputStream bufferOutput = null;
        int c = -1;
        try
        {
            fin4 = new FileInputStream(srcFilePathName);
            fout4 = new FileOutputStream(targetFilePathName);
            bufferInput = new BufferedInputStream(fin4);
            bufferOutput = new BufferedOutputStream(fout4);
            start = System.currentTimeMillis();
            while ((c = bufferInput.read()) != -1)
            {
                bufferOutput.write(c);
            }
        }
        catch (FileNotFoundException e)
        {
            e.printStackTrace();
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }
        finally
        {
            try
            {
                bufferInput.close();
                bufferOutput.close();
            }
            catch (IOException e)
            {
                e.printStackTrace();
            }
        }
        end = System.currentTimeMillis();
        long time4 = end - start;
        System.out.println("IO_Buffer: " + time4);