文件读写操作2

/** 通过字符IO进行文件读写 */
        FileReader reader = null;
        FileWriter writer = null;
        char[] charArr = new char[512];
        try
        {
            reader = new FileReader(srcFilePathName);
            writer = new FileWriter(targetFilePathName);
            start = System.currentTimeMillis();
            while (reader.read(charArr) != -1)
            {
                writer.write(charArr);
            }
        }
        catch (FileNotFoundException e)
        {
            e.printStackTrace();
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }
        finally
        {
            try
            {
                reader.close();
                writer.close();
            }
            catch (IOException e)
            {
                e.printStackTrace();
            }
        }
        end = System.currentTimeMillis();
        long time5 = end - start;
        System.out.println("IO_char: " + time5);

        /** 直接通过IO读写 */
        FileInputStream fin6 = null;
        FileOutputStream fout6 = null;
        c = -1;
        try
        {
            fin6 = new FileInputStream(srcFilePathName);
            fout6 = new FileOutputStream(targetFilePathName);
            start = System.currentTimeMillis();
            while ((c = fin6.read()) != -1)
            {
                fout6.write(c);
            }
        }
        catch (FileNotFoundException e)
        {
            e.printStackTrace();
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }
        finally
        {
            try
            {
                fin6.close();
                fout6.close();
            }
            catch (IOException e)
            {
                e.printStackTrace();
            }
        }
        end = System.currentTimeMillis();
        long time6 = end - start;
        System.out.println("IO_nobuffer: " + time6);