How to replace/remove 4(+)-byte characters from a UTF-8 string in Java?

Question

Because MySQL 5.1 does not support 4 byte UTF-8 sequences, I need to replace/drop the 4 byte sequences in these strings.

I\'m looking a clean way to replace these charac

Answer 1

Another simple solution is to use regular expression [^\u0000-\uFFFF]. For example in java:

text.replaceAll("[^\\u0000-\\uFFFF]", "\uFFFD");