SonarQube规则squid：S1200限制java。*类为20吗？

Question

How does the SonarQube rule

squid:S1200: Classes should not be coupled to too many other classes (Single Responsibility Principle)

count the coupling number towards its limit of 20?

It seems like it counts classes from the standard Java packages like java.lang.* , java.text.* and java.util.* in this rule's limit of 20. So If I use the Java Integer class, I've used up 1/20 of this rule's limit.

Additional Info: SonarQube Version: 4.5.1

Answer 1

The best way to answer your question is to look directly at the source code of this rule : https://github.com/SonarSource/sonar-java/blob/c1f15b81bcd9d643ab403aeea6e1606040f84eac/java-checks/src/main/java/org/sonar/java/checks/ClassCouplingCheck.java

So it counts every declared type. And so indeed if you use java.lang.Integer it will count as one type so 1/20 of the this rule's limit.

The good news is that you can configure this '20' magical number in your quality profile.