Regex and Extended Chars

Question

Hey guys,
I am looking for a regex that will allow only ascii chars and not extended chars. Can someone please help me out with that? I have written this bit of code that will remove extended ascii chars but I was looking for a regex. Any ideas?
  //this is what I have to remove ascii chars.
   public static void main(String[] args){
        String str = "123asd.32#$%^&*()_+={}|\\;";
        str +=  (char)128;
        str +=  (char)129;
        str +=  (char)130;
        str +=  (char)131;
        str +=  (char)132;
        System.out.println(str);
        str = removeExtenedChars(str);
        System.out.println(str);
   public static String removeExtenedChars(String str){
        StringBuffer sb = new StringBuffer();
        StringCharacterIterator it = new StringCharacterIterator(str);
        for(char c = it.first(); c != CharacterIterator.DONE;c = it.next() ){
           int asciiVal = (int)c;
           if(asciiVal > 0 && asciiVal < 128){
                sb.append(c);
        return sb.toString();
   }

Answer 1

String asciiOnly = "your string".replaceAll("[^\u0000-\u007f]+","");