There’s no point in forcing the overhead of a method call for a method that always returns the same constant value. Even worse, the fact that a
method call must be made will likely mislead developers who call the method thinking that something more is done. Declare a constant instead.
This rule raises an issue if on methods that contain only one statement: the return of a constant value.
Noncompliant code example
int getBestNumber() {
  return 12;  // Noncompliant
}
Compliant solution
static final int BEST_NUMBER = 12;
Exceptions
The following types of method are ignored:
  -  methods that override a method. 
-  methods that are not final (not having the final,privateorstaticmodifier and not in a record or a
  final class).
-  methods with annotations, such as @Overrideor Spring’s@RequestMapping.