Truncating Strings by Bytes

Question

I create the following for truncating a string in java to a new string with a given number of bytes.

        String truncatedValue = \"\";
        String curren         


        

Answer 1

you could convert the string to bytes and convert just those bytes back to a string.

public static String substring(String text, int maxBytes) {
   StringBuilder ret = new StringBuilder();
   for(int i = 0;i < text.length(); i++) {
       // works out how many bytes a character takes, 
       // and removes these from the total allowed.
       if((maxBytes -= text.substring(i, i+1).getBytes().length) < 0) break;
       ret.append(text.charAt(i));
   }
   return ret.toString();
}