get Char Set
-charset name Specifies the HTML character set for this document. The name should be a preferred MIME name as given in the IANA Registry. For example:
javadoc -charset "iso-8859-1" mypackage
would insert the following line in the head of every generated page:
This META tag is described in the HTML standard. (4197265 and 4137321)
Also see -encoding and -docencoding.