Special Characters Check in OBPM

Question

Is this code good to check for special characters in OBPM 10GR3?
Pattern p = Pattern.compile("/[a-zA-Z0-9]/g");
     Matcher m = p.matcher("This is a string");
     boolean matched = m.matches();
     logMessage("--Identifying Special Characters--"+matched);
     if (matched == true)
          logMessage("--Contains Special Character--");
     }

Answer 1

Here's what I use to fix file names to ensure that they do not have special characters or international characters:
String beforeConversion = "àÀâÂäÄáÁéÉèÈêÊëËìÌîÎïÏòÒôÔöÖùÙûÛüÜçÇ’ñ";
String afterConversion = "aAaAaAaAeEeEeEeEiIiIiIoOoOoOuUuUuUcC'n";
// does it contain international characters?
if (originalFileNameArg.match(regexp : '/[àÀâÂäÄáÁéÉèÈêÊëËìÌîÎïÏòÒôÔöÖùÙûÛüÜçÇ’ñ]+/').length() > 0) {
    int i = 0;
    String @char;
    while (i < beforeConversion.length()) {
        originalFileNameArg = originalFileNameArg.replace(from : beforeConversion.charAt(position : i),
                                                          @to : afterConversion.charAt(position : i));
        i = i + 1;
String[] m = originalFileNameArg.split(regexp : '/[^a-zA-Z0-9_,']+/');
int i = 0;
boolean first = true;
foreach (item in m) {
    if (! item.empty) {
        if (first) {
            retValue = item;
        else {
            retValue = retValue + " " + item;
    first = false;
    i = i + 1;
return retValue.trim();Dan