How do you use ServiceLoader and services with a simple code example?

The Java ServiceLoader is a utility that enables applications to discover and load service implementations at runtime. By defining a service interface and providing one or more implementations of it, ServiceLoader simplifies the process of loosely coupling components in an application. Below is a simple example demonstrating how to use ServiceLoader to load services in Java.


        import java.util.ServiceLoader;

        // Define a service interface
        public interface GreetingService {
            void greet(String name);
        }

        // Implement the service interface
        public class EnglishGreetingService implements GreetingService {
            public void greet(String name) {
                System.out.println("Hello, " + name + "!");
            }
        }

        // Main application to load the service
        public class ServiceLoaderExample {
            public static void main(String[] args) {
                ServiceLoader serviceLoader = ServiceLoader.load(GreetingService.class);
                for (GreetingService service : serviceLoader) {
                    service.greet("John Doe");
                }
            }
        }

How do you use ServiceLoader and services with a simple code example?

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How do you use ServiceLoader and services with a simple code example?

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