Fix tab-completion in Java (and other c-like) mode

emacs/.emacs.d/config/init-java.el

@@ -4,6 +4,11 @@
 (use-package google-c-style
   :hook (java-mode . google-set-c-style))
 
+(use-package cc-mode
+  :straight (:type built-in)
+  :general
+  (c-mode-base-map "TAB" #'indent-for-tab-command))
+
 (use-package protobuf-mode)
 
 (provide 'init-java)