Regex to validate alpahanumeric or a set of special characters

I have a requirement to ensure that the string has only alphanumeric or a set of characters like + ( ) , ‘ . – =
I tried like

    String regex = "([a-zA-Z0-9]+)|([\\'|\\()|\\+|\\,|\\-|\\.|\\="]+)";    System.out.println("Regex : " + regex);    Pattern pattern = Pattern.compile(regex);    Matcher matcher = pattern.matcher(str);    if (matcher.matches()) {        System.out.println("Match");    } else {        System.out.println("Not Matching");    }

Bt it is not working, Can anyone assist me please

Thanks in advance

It looks like it will not match a whole string containing a mix of alphanumerics & symbols because of the OR in the middle.

e.g. it wont match abcABC()+, yet will match abcABC & will match ()+

Try:

([a-zA-Z0-9\\'\\(\\+\\)\\,\\-\\.\\=]+)

Hope this helps!