Java for IP number segment regular match

Java regular match IP number segment

public static Boolean Ipmatch (List IPs, String IP) {        if (ips.contains (IP)) {            return true;        }        for (int i = 0; i < ips.size (); i++) {            List lip = arrays.aslist (Ips.get (i). ToString (). split ("\ \"));            String re = "^";            for (int j = 0; J < Lip.size (); j + +) {                String num = Lip.get (j). ToString ();                if (num! = "*") {                    re + = num + ".";                } else {                    re + = "\\d{0,3}.";                }                if (j = = Lip.size ()) {                    re = re.substring (0, Re.length ()-1). ToString () + "\\$";                }            }            Pattern pattern = pattern.compile (re);            Matcher Matcher = Pattern.matcher (IP);            if (Matcher.matches ()) {                return true;            }        }        return false;    }

Java for IP number segment regular match