Add Checkstyle settings for newline after catch brace

[subhramit]

Since this has been troubling for a while now...
IntelliJ:

This PR should test for github actions and reviewdog before merge.

Mandatory checks

• I own the copyright of the code submitted and I licence it under the MIT license
• Change in CHANGELOG.md described in a way that is understandable for the average user (if change is visible to the user)
• Tests created for changes (if applicable)
• Manually tested changed features in running JabRef (always required)
• Screenshots added in PR description (for UI changes)
• Checked developer's documentation: Is the information available and up to date? If not, I outlined it in this pull request.
• Checked documentation: Is the information available and up to date? If not, I created an issue at https://github.com/JabRef/user-documentation/issues or, even better, I submitted a pull request to the documentation repository.

[subhramit]

"Test failed successfully"
But why does reviewdog not bark...

[github-actions]

Your code currently does not meet JabRef's code guidelines.
We use Checkstyle to identify issues.
Please carefully follow the setup guide for the codestyle.
Afterwards, please run checkstyle locally and fix the issues.

[subhramit]

Your code currently does not meet JabRef's code guidelines. We use Checkstyle to identify issues. Please carefully follow the setup guide for the codestyle. Afterwards, please run checkstyle locally and fix the issues.

Ah, perfect.

[github-actions]

Your code currently does not meet JabRef's code guidelines.
We use Checkstyle to identify issues.
Please carefully follow the setup guide for the codestyle.
Afterwards, please run checkstyle locally and fix the issues.

[github-actions]

Your code currently does not meet JabRef's code guidelines.
We use Checkstyle to identify issues.
Please carefully follow the setup guide for the codestyle.
Afterwards, please run checkstyle locally and fix the issues.

[Siedlerchr]

Seems to work, but would be even better if we could get this fixed in IJ

[subhramit]

Seems to work, but would be even better if we could get this fixed in IJ

Do you mean the warning:

Or the auto-formatting that sometimes causes this?

[koppor]

Or the auto-formatting that sometimes causes this?

Yes, the auto formatting. Takes some "minutes" to experiment / google / check intellij issues / report intellij issue / ...

[github-actions]

Your code currently does not meet JabRef's code guidelines.
We use Checkstyle to identify issues.
Please carefully follow the setup guide for the codestyle.
Afterwards, please run checkstyle locally and fix the issues.

[koppor]

For completeness, I would like to see a link to an stackoverflow question having this as question - and posting this as answer maybe?

[subhramit]

For completeness, I would like to see a link to an stackoverflow question having this as question - and posting this as answer maybe?

Clarifying -
This as a question - by "this" do you mean the issue framed as a question? Like "how to configure intellij not to add a newline after..."

This as answer - you mean the checkstyle properties in this PR as the answer?

[subhramit]

Fixed the violations in the rest of the codebase. Tests will be green now. Can do a final review and merge.

[koppor]

For completeness, I would like to see a link to an stackoverflow question having this as question - and posting this as answer maybe?

Clarifying - This as a question - by "this" do you mean the issue framed as a question? Like "how to configure intellij not to add a newline after..."

Question: Title: "How can checkstyle be configured to throw an error if a line break is after the opening brace"

Example:

I have

try {
    // ...
} catch (
  Exception e) {
    // ...
}

Then you can also do "answer your own question". - Or wait for 48h if someone else answers