Used Google Java Codestyle

[skabashnyuk]

What does this PR do?

1. In current pr I've made formatting for all Java source code with mvn com.coveo:fmt-maven-plugin:format . This plugin uses this Google's tool https://github.com/google/google-java-format to apply Google Java codestyle to all our source code.

2. In this pr Changes in maven parent to adapt Google java codestyle che-parent#21 I've enabled check phase of fmt-maven-plugin by default. So if any formatting is missing you'll see

To fix it, you need to execute mvn fmt:format

3. To help you have the same format with you tool you can reuse IntelliJ or Eclipse code format. see more https://github.com/google/google-java-format or https://google.github.io/styleguide/javaguide.html.

4. If IntelliJ or Eclipse plugin produces some difference with maven plugin. Maven plugin wins. It's last Single source of truth

What issues does this PR fix or reference?

#5772
Related to
eclipse-che/che-lib#34
eclipse-che/che-parent#21

Changelog

Release Notes

Docs PR

[codenvy-ci]

Build # 3221 - FAILED

Please check console output at https://ci.codenvycorp.com/job/che-pullrequests-build/3221/ to view the results.

[riuvshin]

ci-build

[slemeur]

What about this wiki page: https://github.com/eclipse/che/wiki/Coding-Guidelines

Are you also planning to extend the development workflow guide with the information in the description of the issue: https://github.com/eclipse/che/wiki/Development-Workflow#code-style ?

[skabashnyuk]

@slemeur I'll revise header if this issues with @eivantsov and will provide content for https://github.com/eclipse/che/wiki/Development-Workflow#code-style. https://github.com/eclipse/che/wiki/Coding-Guidelines eventually will be removed with link to https://google.github.io/styleguide/javaguide.html

[ghost]

https://github.com/eclipse/che/wiki/Development-Workflow#code-style and https://github.com/eclipse/che/wiki/Coding-Guidelines updated

[slemeur]

thanks guys.

[codenvy-ci]

Build # 3423 - FAILED

Please check console output at https://ci.codenvycorp.com/job/che-pullrequests-build/3423/ to view the results.

[codenvy-ci]

Build # 3440 - FAILED

Please check console output at https://ci.codenvycorp.com/job/che-pullrequests-build/3440/ to view the results.