Does Community edition support custom rules

What are you trying to accomplish?
Use Community Edition and configure custom rules for execution.

  • Support a new language? No I want to run rules for Java Classes

What’s your specific coding challenge in developing your plugin?
I have ruleset available from server in the form of xml file, I want to import the rules into SonarQube community edition. So, I can check the code against the custom rules, I am going through the SonarQube link ( Adding coding rules (sonarqube.org)) .
But not able to find template to perform the mentioned step ( 1. Tick the Template criterion and select Show Templates Only.).

Please let me know if configuring custom rules is possible in Sonar Qube Community Edition

Yes, Community Edition supports template rules.

You can find template rules on the Rules page of your SonarQube instance.

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