explored singleton and prototype scope for beans

springframework-springfundamentals-project/conference-javaconfig/src/main/java/AppConfig.java

@@ -2,13 +2,17 @@ import com.example.repository.HibernateSpeakerRepositoryImpl;
 import com.example.repository.SpeakerRepository;
 import com.example.service.SpeakerService;
 import com.example.service.SpeakerServiceImpl;
+import org.springframework.beans.factory.config.BeanDefinition;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Scope;
 
 @Configuration
 public class AppConfig {
 
     @Bean(name = "speakerService")
+    @Scope(value = BeanDefinition.SCOPE_SINGLETON)
+//    @Scope(value = BeanDefinition.SCOPE_PROTOTYPE)
     public SpeakerService getSpeakerService() {
         // Using Constructor Injection
         SpeakerServiceImpl service = new SpeakerServiceImpl(getSpeakerRespository());

springframework-springfundamentals-project/conference-javaconfig/src/main/java/Application.java

@@ -10,7 +10,16 @@ public class Application {
         ApplicationContext appContext = new AnnotationConfigApplicationContext(AppConfig.class);
 
 //        SpeakerService service = new SpeakerServiceImpl();
+
+
         SpeakerService service = appContext.getBean("speakerService", SpeakerService.class);
+        System.out.println(service);
+
         System.out.println(service.findALl().get(0).getFirstName());
+
+        // Returns same bean as service --> Singleton
+        // With scope Prototype, returns two different instances of each bean --> Prototype
+        SpeakerService service2 = appContext.getBean("speakerService", SpeakerService.class);
+        System.out.println(service2);
     }
 }