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From: "Arne Vajhøj" <arne.vajhøj@1:261/38.remove-5qr-this>
Subject: Re: retriving escape unicode sequences from files ...
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Date: Sat, 04 Aug 2012 18:41:42 GMT
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  To: qwertmonkey
From: Arne Vajhoj <arne@vajhoej.dk>

On 8/2/2012 11:52 PM, qwertmonkey@syberianoutpost.ru wrote:
>   Why is it that if you save a unicode sequence in a file, say "frantais"
> ~
> \u0066\u0072\u0061\u006e\u00e7\u0061\u0069\u0073
> ~
>   and then retrieve as a String you can't then convert it back to a UTF-8
String
> ~

Some code from my shelf:

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Unescape {
     private static final Pattern p = Pattern.compile("\\\\u([0-9A-F]{4})");
     public static String U2U(String s) {
         String res = s;
         Matcher m = p.matcher(res);
         while(m.find()) {
             res = res.replaceAll("\\" + m.group(0),
Character.toString((char)Integer.parseInt(m.group(1), 16)));
         }
         return res;
     }
     public static void main(String[] args) {

System.out.println(U2U("\\u0041\\u0042\\u0043\\u000A\\u0031\\u0032\\u0033"));
     }
}

Arne

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