Dependecies without injection

src/main/java/guru/springframework/spring6di/Spring6DiApplication.java

@@ -1,13 +1,20 @@
 package guru.springframework.spring6di;
 
+import guru.springframework.spring6di.controllers.MyController;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 
 @SpringBootApplication
 public class Spring6DiApplication {
 
     public static void main(String[] args) {
-        SpringApplication.run(Spring6DiApplication.class, args);
+        final var context = SpringApplication.run(Spring6DiApplication.class, args);
+
+        System.out.println("Hello from the Main");
+
+        final var myController = context.getBean(MyController.class);
+
+        System.out.println(myController.sayHello());
     }
 
 }

src/main/java/guru/springframework/spring6di/controllers/MyController.java

@@ -0,0 +1,21 @@
+package guru.springframework.spring6di.controllers;
+
+import guru.springframework.spring6di.services.GreetingsService;
+import guru.springframework.spring6di.services.impl.GreetingsServiceImpl;
+import org.springframework.stereotype.Controller;
+
+@Controller
+public class MyController {
+
+    private final GreetingsService greetingsService;
+
+    public MyController() {
+        this.greetingsService = new GreetingsServiceImpl() {};
+    }
+
+    public String sayHello() {
+        System.out.println("I'm the MyController!!");
+
+        return this.greetingsService.sayHello();
+    }
+}

src/main/java/guru/springframework/spring6di/services/GreetingsService.java

@@ -0,0 +1,6 @@
+package guru.springframework.spring6di.services;
+
+public interface GreetingsService {
+
+    String sayHello();
+}

src/main/java/guru/springframework/spring6di/services/impl/GreetingsServiceImpl.java

@@ -0,0 +1,10 @@
+package guru.springframework.spring6di.services.impl;
+
+import guru.springframework.spring6di.services.GreetingsService;
+
+public class GreetingsServiceImpl implements GreetingsService {
+    @Override
+    public String sayHello() {
+        return "Hello from the Greetings Service";
+    }
+}

src/test/java/guru/springframework/spring6di/Spring6DiApplicationTests.java

@@ -1,11 +1,31 @@
 package guru.springframework.spring6di;
 
+import guru.springframework.spring6di.controllers.MyController;
 import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.context.ApplicationContext;
 
 @SpringBootTest
 class Spring6DiApplicationTests {
+
+    @Autowired
+    private ApplicationContext context;
+
+    @Autowired
+    private MyController myController;
+
+    @Test
+    void myControllerAutowired() {
+        System.out.println(this.myController.sayHello());
+    }
 
+    @Test
+    void applicationContextAutowired() {
+        final var controller = this.context.getBean(MyController.class);
+        System.out.println(controller.sayHello());
+    }
+
     @Test
     void contextLoads() {
     }

src/test/java/guru/springframework/spring6di/controllers/MyControllerTest.java

@@ -0,0 +1,15 @@
+package guru.springframework.spring6di.controllers;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class MyControllerTest {
+
+    @Test
+    void sayHello() {
+        final var myController = new MyController();
+
+        System.out.println(myController.sayHello());
+    }
+}