java - String.split() *not* on regular expression?

Question

Since String.split() works with regular expressions, this snippet:

String s = "str?str?argh";
s.split("r?");

... yields: [, s, t, , ?, s, t, , ?, a, , g, h]

What's the most elegant way to split this String on the r? sequence so that it produces [st, st, argh]?

EDIT: I know that I can escape the problematic ?. The trouble is I don't know the delimiter offhand and I don't feel like working this around by writing an escapeGenericRegex() function.

Answer 1

A general solution using just Java SE APIs is:

String separator = ...
s.split(Pattern.quote(separator));

The quote method returns a regex that will match the argument string as a literal.