How to parse query parameters in Java that works with all delimiters?

So according to this answer, it seems that any character can be used to separate query parameters in a URL.

Hence a regex matcher for & delimiter, such as the following, will fail when ; or | or something else is used for example:

private static final Pattern MATCHER = Pattern.compile("name=([^&#]*)");

So is there a GENERIC way of extracting query parameters from a URL, given that ANY valid delimiter could have been used in that URL ?