spotless VS fmt-maven-plugin

Some code formatters such as Spotless (https://github.com/diffplug/spotless/tree/main/plugin-gradle...) allow you to format code only in files that have changes against some designated branch such as `master`. So, you check out your feature branch, make changes, do some commits, and run spotless. Only the files which have some changes between your workspace and the master branch will be formatted. This allows you to gradually format the project as and when files would be changed anyways.

As a Top-Level Apache open source project, ShardingSphere has 400 contributors as of today. Since most developers do not have the same coding style, it is not easy to standardize the project’s overall code format in a GitHub open collaboration model. To solve this issue, ShardingSphere uses Spotless to unify code formatting.

But please just use an code formatter like spotless. Or better yet set it as a pre commit hook. You will thank yourself later, and so will all of your coworkers.

I use Spotless but it’s not as opiniotated as Prettier or Black

I use Spotless and it works quite well, but there are many other options. Also good IDEs can reformat your code.

We are working on different ways to run diktat, however. For example, the integration into spotless is on its way. In the future we might consider adding support for Intellij, and if someone decides to contribute it - it will be very welcome as well.

https://github.com/spotify/fmt-maven-plugin (formerly coveo) both to format before commit and to check on ci that the formatting is correct.

Coveo is another one that's easier to set up because /drumroll - there are no configurations at all. It uses the google java format which, as /u/dpash pointed out in his response has 2 space indentation and comically short lines. I'm not advocating 300 line lengths or anything, but google's style is very rigid in that regard. I've actually gotten used to the 2 space thing.