public interface GreetingService { String greet(String name); } @AutoService(GreetingService.class) public class EnglishGreetingService implements GreetingService { @Override public String greet(String name) { return "Hello, " + name + "!"; } } com.example.EnglishGreetingService ServiceLoader<GreetingService> loader = ServiceLoader.load(GreetingService.class);