Java Style
An important point to pay attention is the code style. It looks like a silly thing but it's not. The code style help to make a readable code. And it makes the work less tiring.
I don't want to spend a lot of time talking about this, but I'd like to give to you three good references that I believe can be used to consulting when we are coding. If all the team uses the same reference to formatting the coding then to read and maintenance code is easier.
The references talk about braces, imports, formatting, comments, etc. Sometimes they can be a little different from each other. There are no right or wrong. The important thing is to have a convention with the team.
Practice this with your team. If you don't want to use any one of them then you can do a pattern for your company and show everyone. For sure it will be a great benefit.
That's it for now. Go deeply and have fun coding!!!.