use the hex representation, not the binary one, both APIs , see http://stackoverflow.com/questions/5470219/java-get-md5-string-from-message-digest/5470268#5470268

In reply to Re: Java equivalent api for perl method Digest::MD5 md5($data) by Anonymous Monk
in thread Java equivalent api for perl method Digest::MD5 md5($data) by Manjunathagee

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