The indention is a formatting issue while the comments is a template issue.
The templates are in Window -> Preferences -> Java -> Code Style -> Code Templates. Browse all of them and look for the things you would like to change.
The Formatter is a little bit more complicated. You find it under Window -> Preferences -> Java -> Code Style -> Formatter. There are tons of options there but I’ll just answer your question.
- Templates -> Comments -> Methods -> Edit and delete everything
- Formatter -> Edit -> Braces Tab -> Change which situations you want
- Templates -> Code -> Method Body -> Edit and delete everything