java - surround words with brackets when a comma is reached in a String -

i 90% there regular expression appreciate in finalizing it.

i start following string.

string toiletder= "toilet, bog, public convenience"; 

//formated code.

and need become "({bog}|{toilet}|{public convenience})"

my regex far is.

toiletder.replaceall("(\\p{alpha}+)", "{$1}|").replace(",", "") 

it produces following

"{toilet}| {bog}| {public}| {convenience}|" 

i want words surrounded in new set of {} when comma reached in string , not new word how works.

wouldn't

string string = "({" + toiletder.replaceall(",\\s*","}|{") + "})" 

be easier?