Regex to separate hexcode

Question

I have a String like:

String s = "IPhone 5s &#x0024;400"

Which I want to get as:

String s1 = "IPhone 5s";

String s2 = "$400";

What I tried was getting the last word of the String and checking if it starts with "&#" and if yes, take it out of the String and make it UTF-8.

But it might be possible that the Price may not be at the end of the String.

Also, does all the currency symbols start with "$#"?

"does all the currency symbols start with "$#"?" -- that depends on how the string is encoded. The weird thing is, this seems XML or HTML, where plain ASCII characters such as `$` do not *need* to be encoded. — Jongware, Oct 01 '14 at 09:39
We can not answer the last question, you have to tell us where this `String` comes from and what it's format is. If you don't know, you first need to figure that out, before doing some regex... — brimborium, Oct 01 '14 at 09:39
@Jongware Not all of the currency symbols are within the ASCII set, therefore it would be actually nice to have all currency symbols encoded so they are easier to detect. — brimborium, Oct 01 '14 at 09:41
@brimborium: true, but surely there could be *other* non-ASCII characters in the string as well, so one still needs to check 'everything'. — Jongware, Oct 01 '14 at 09:48
@Jongware Correct. As long as OP doesn't completely specifies the format, we can only guess. ;) — brimborium, Oct 01 '14 at 10:34

score 0 · Answer 1 · answered Oct 01 '14 at 09:43

Split before &#:

String s = "IPhone 5s &#x0024;400"
String[] splitArray = subjectString.split("(?=&#)");

After that, call StringEscapeUtils.unescapeHtml4 on the strings in that array to correctly decode the symbols. If there is only one such symbol (as in your case):

splitArray[1] = StringEscapeUtils.unescapeHtml4(splitArray[1]);

score 0 · Answer 2 · answered Oct 01 '14 at 10:37

You can either use the StringEscapeUtils or the standard libs with regex, then split the string.

import java.io.*;

class Test{
   public static void main(String args[]){
      String p = new String("IPhone 5s &#x0024;400");
      String r = p.replaceAll("(&#x0024;)","\\|\\$");

      String[] s = r.split("\\|"); 
      System.out.println(s[0]);    // IPhone 5s
      System.out.println(s[1]);    // $400
   }
}

Example:

http://ideone.com/epttX4

Regex to separate hexcode

2 Answers2