final String regex = "(\\d{1,2}).(\\d{1,2}).(\\d{2,2}$)";
        final String string = "12.02.16";

        final Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE);
        final Matcher matcher = pattern.matcher(string);

        matcher.find();
        StringBuilder sbuf = new StringBuilder();
        Formatter fmt = new Formatter(sbuf);
        fmt.format("%02d-%02d-20%02d ", Integer.parseInt(matcher.group(1)), Integer.parseInt(matcher.group(2)), Integer.parseInt(matcher.group(3)));
        System.out.print(sbuf.toString());