Code formatting

[jjzazuet]

Applies automatic Google Java code formatting conventions to the full source tree.

Not a lot of difference with current formatting except:

• Indentation size.
• Order of a few imports.
• Class header javadoc comments.

Thanks!

[jjzazuet]

By including the Google Java format plugin, code check-ins which violate formatting will fail the build.

To apply automatic formatting use:

gradle googleJavaFormat

[jjzazuet]

@simonwep , are we clear to merge and keep going? Thanks.

[simonwep]

Sorry for the late response, yes this looks really good! Didn't know that there plugins for Java to format code and stuff 😊 (I always used the IDE)

Only one thing - I'd actually prefer 4 spaces instead of 2 (regarding overall readability), or what do you think?

[jjzazuet]

@simonwep my apologies, as I just wrapped up a large project at work taking most of my time. Two space base indentation is generally recommended by Google's Java code style formatting conventions. A lot of projects follow it since it offers good readability in most IDEs.

https://google.github.io/styleguide/javaguide.html

Let me know if you'd prefer to keep it on 4 spaces and I'll close this PR. Thanks!

[simonwep]

Hey, I totally understand and I'm grateful what you've already done!
I'd actually stick to 4 spaces for readability and consistency, but I'm interested in googles code formatter - would it be possible to configure it using 4 spaces? Tabs would also work as we don't need to align any properties like in JSX, but in case of large code-blocks it's hard to distinguish 10 different levels of indentation.

[lukeeey]

Just thought i'd add, i have never see any Java project using 2 spaces.