Spring Boot – Injecting application properties into a Util class variable

I would like to ask a question as per title.

I have a util class such as follows:

@PropertySource("classpath:application.properties")
public class ServiceUtils {

    @Value("${dummy}")
    public static String SOME_VAR;

    @Value("${dummy}")
    // Baeldung says that it's not possible to inject props to static vars
    public void setSomeVar(String var) {
       SOME_VAR = var;
    }
}

When I launch the application, and debug, the above variable SOME_VAR comes as null 🙁

I am aware that I am using this in a Util class, which is an antipattern, I think.

Could someone help me understand what I need to correct to get this to work?

Regards

Answer

Spring does not allow you to inject values in static variables. Use a non static instead.

If it has to be static, do something like this:

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

@Component
public class ServiceUtils {

    public static String SOME_VAR;

    @Value("${dummy}")
    public void setSomevar(String value) {
        SOME_VAR= value;
    }

}