                                                                                                                                                                                                                                                                
Path: m9ni3307pbd.0!nntp.google.com!news1.google.com!news.glorb.com!news.netfront.net!not-for-mail
From: langrenfengzi <langrenfen...@myopera.com>
Newsgroups: alt.comp.lang.java,comp.lang.java.help,comp.sources.d
Subject: Re: Newbie seeking comments on StdinReader class
Date: Sat, 10 Sep 2011 21:22:49 +0800
Organization: Netfront http://www.netfront.net/
Lines: 37
Message-ID: <op.v1lgsbku1djqkw@langrenfengzi>
References: <d7333ac9-4b0e-41b3-854d-7c2486e3fd5b@33g2000yqu.googlegroups.com>
NNTP-Posting-Host: 119.80.125.81
Mime-Version: 1.0
NNTP-Posting-Date: Sat, 10 Sep 2011 13:22:53 +0000 (UTC)
User-Agent: Opera Mail/11.51 (Win32)
Content-Type: text/plain; charset=gbk; format=flowed; delsp=yes
Content-Transfer-Encoding: Quoted-Printable

=D4=DA Mon, 05 Sep 2011 22:00:39 +0800=A3=AC<anirudhbh...@yahoo.com> =D0=
=B4=B5=C0:

The key sentence:
>  I want the class to silently block until the user enters the
> correct input.

Here is my solution.It's a method named readInt, other methods are simil=
ar.


import java.util.Scanner;

public class StdinReader{

   public static void main(String[] args){

     Scanner scanner =3D new Scanner(System.in);
     System.out.println(readInt(scanner));
   }

   public static int readInt(Scanner scanner){

     int digit =3D 0;
     while(true){
       try{
         digit =3D Integer.parseInt(scanner.next());
         break;
       }catch(Exception e){

       }
     }
     return digit;
   }
}

--- Posted via news://freenews.netfront.net/ - Complaints to n...@netfront.net ---