java 读取文件

try
        {
            String fileName = "D:\\\\域名"; //文件名
            FileInputStream in = new FileInputStream(new File(fileName));
            //当文件没有结束时每次读取一个字节显示
            while (域名lable()>0)
            {
                域名t((char)域名());
            }
            域名e();
        }
        catch (IOException e)
        {
            域名tln(域名ring());
        }