checkstyle inconsistent with prettier about prettier-java

[xenoterracide]

I would be fine with leaving the input as is. I'm not sure how I feel about this particular style of code in general but reducing it to one line seems like the wrong answer. I temporarily fixed this code by adding braces around the first one

[jtkiesel]

Prettier JavaScript seems to leave the input as it is in this case (i.e. it wants a newline separating the if and else if, and doesn't automatically add braces.) We do have #459 that considers forcing braces around conditional bodies. That change would probably require more discussion than simply adding/keeping the newline, so I would suggest that the action item for this ticket is to add/keep the newline between the if and else if to mimic Prettier JavaScript's behavior (and to avoid violating the Checkstyle config we provide.)