JBoss Messaging uses a specific syntax for representing wildcards in security settings, address settings and when creating consumers.
The syntax is similar to that used by AMQP.
A JBoss Messaging wildcard expression contains words delimited by the character '.' (full stop).
The special characters '#' and '*' also have special meaning and can take the place of a word.
The character '#' means 'match any sequence of zero or more words'.
The character '*' means 'match a single word'.
So the wildcard 'news.europe.#' would match 'news.europe', 'news.europe.sport', 'news.europe.politics', and 'news.europe.politics.regional' but would not match 'news.usa', 'news.usa.sport' nor 'entertainment'.
The wildcard 'news.*' would match 'news.europe', but not 'news.europe.sport'.
The wildcard 'news.*.sport' would match 'news.europe.sport' and also 'news.usa.sport', but not 'news.europe.politics'.