Java - removing strange characters from a String

Question

How do I remove strange and unwanted Unicode characters (such as a black diamond with question mark) from a String?

Updated:

Please tell me the Unicode chara

Answer 1

Justin Thomas's was close, but this is probably closer to what you're looking for:

String nonStrange = strangeString.replaceAll("\\p{Cntrl}", ""); 

The selector \p{Cntrl} selects "A control character: [\x00-\x1F\x7F]."