groovy dependencies { implementation 'com.google.auto.service:auto-service:1.0-rc6' annotationProcessor 'com.google.auto.service:auto-service:1.0-rc6' } import com.google.auto.service.AutoService; @AutoService(Calculator.class) public class MyCalculator implements Calculator { } import java.util.ServiceLoader; public class Main { public static void main(String[] args) { ServiceLoader<Calculator> loader = ServiceLoader.load(Calculator.class); for (Calculator calculator : loader) { } } }