The purpose of the @Value annotation in org.springframework.beans.factory.annotation is to inject a value into a field or
method based on the Spring context after it has been established.
If the annotation does not include an expression (either Spring Expression Language or a property injection), the injected value is a simple
constant that does not depend on the Spring context, making the annotation replaceable with a standard field initialization statement.
This not only implies the redundant use of @Value, but could also indicate an error where the expression indicators (#,
$) were omitted by mistake.
Exceptions
This rule does not raise an issue if @Value is applied to a method or method argument, because the annotation has the side effect that
the method is called.
