java - how to put - in [] in regular expression -

i want use [] indicate group of acceptable characters, among -. directly putting - in [] impossible. example, want put a-za-z , - inside [], cannot directly write [a-za-z-]. how should write -? using \ quote? or else?

i using in java.

edit: see below answer. if using - in [] , feel wrong, please pay attention - might link 2 characters, , convention put - last character.

you can write [a-za-z-]. in fact, that's how supposed it: make - last character.

(as discussed in comments, not required make - last character. convention, however, should last character, in order make regex easier read.)