diff --git a/Library/Homebrew/language/java.rb b/Library/Homebrew/language/java.rb
index 1d2685d3fb..db9be69a22 100644
--- a/Library/Homebrew/language/java.rb
+++ b/Library/Homebrew/language/java.rb
@@ -1,6 +1,9 @@
 # frozen_string_literal: true
 
 module Language
+  # Helper functions for Java formulae.
+  #
+  # @api public
   module Java
     def self.find_openjdk_formula(version = nil)
       can_be_newer = version&.end_with?("+")