java : How garbage collection works for static final String object declared in interface and class

Question

I have declared String object inside interface which are by default public, static and final . I want to know does it makes any difference in garbage collection in comparison to class in which the same String object declared with public, static and final

interface Message {
    String SUCCESS = "Request processed successfully";
    String ERROR = "Error in processing your request";
}

class Message {
    public static final String SUCCESS = "Request processed successfully";
    public static final String ERROR = "Error in processing your request";
}

Answer 1

Variables aren't garbage-collected, so it is irrelevant where they are defined. Objects are garbage-collected, but in this case the only visible objects are pooled string literals, and the rules for garbage-collecting those are defined by the JLS and the JVM specification; certainly not by whether references to them are defined in classes or interfaces.