public class ReadLine
{
    public static void main (String[] args) {
        byte buf[]=new byte [1024];
        String strInfo=null;
        int pos=0;
        int ch=0;
        System.out.println("please enter info,input bye for exit;");
        while(true)
        {
            try{
                ch=System.in.read();
            }
            catch(Exception e)
            {
                System.out.println(e.getMessage());
            }
            switch(ch)
            {
                case '\r':break;
                case '\n':
                    strInfo=new String(buf,0,pos);
                    if(strInfo.equals("byte"))
                        return ;
                    else
                        System.out.println(strInfo);
                        System.out.println(pos);
                        pos=0;
                        break;
                default:
                    buf[pos++]=(byte)ch;
            }
        }
}
}