Here we can some something like this. And instead of using any shortcut we can write "default" comments at class/ package /project level. And modify as per requirement
*** Install JavaDoc Plugin ***
1.Press shift twice and Go to Plugins.
2. search for JavaDocs plugin
3. Install it.
4. Restart Android Studio.
5. Now, rightclick on Java file/package and goto
JavaDocs >> create javadocs for all elements
It will generate all default comments.
Advantage is that, you can create comment block for all the methods at a time.