To make case insensitive pattern matching of Unicode strings in Java, you can call Pattern.compile with a second argument, like this:
Pattern p =
Pattern.compile(patternString, Pattern.CASE_INSENSITIVE | Pattern.UNICODE_CASE);
(This is useful when dealing with non-ASCII/non-Latin1 text, such as Cyrillic. However, it may not work flawlessly for the Turkish Unicode characters.)
Update: I just learned that there is a nicer way of doing this: start the patternString above with "(?iu)":
Pattern p =
Pattern.compile("(?iu)"+ patternString);
