RosettaCodeData/Task/UTF-8-encode-and-decode/J/utf-8-encode-and-decode-1.j

utf8=: 8&u:               NB. converts to UTF-8 from unicode or unicode codepoint integer
ucp=: 9&u:                NB. converts to unicode from UTF-8 or unicode codepoint integer
ucp_hex=: hfd@(3 u: ucp)  NB. converts to unicode codepoint hexadecimal from UTF-8, unicode or unicode codepoint integer