added spring annotations to certain classes

src/main/java/Controllers/CommentController.java

@@ -1,5 +1,8 @@
 package Controllers;
 
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
 public class CommentController {
 
     public String postComment(int id){

src/main/java/Controllers/MessageController.java

@@ -1,5 +1,8 @@
 package Controllers;
 
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
 public class MessageController {
 
     public String sendMessage(int id){

src/main/java/Controllers/TopicsController.java

@@ -1,5 +1,8 @@
 package Controllers;
 
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
 public interface TopicsController {
 
     public String getDescription();

src/main/java/Controllers/User.java

@@ -1,5 +1,8 @@
 package Controllers;
 
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
 public abstract class User {
     private int id;
     private String name;

src/main/java/Model/Console.java

@@ -1,6 +1,9 @@
 package Model;
 
 public class Console {
+
+    public String print(){return null; }
+
     public String getStringInput(){
         return null;
     }

src/main/java/Model/NewAccountCreator.java

@@ -1,5 +1,7 @@
 package Model;
 
+import Controllers.User;
+
 public class NewAccountCreator extends User {
 
     public NewAccountCreator(int id, String name, String username, String password, String email) {

src/main/java/View/MainApplication.java

@@ -1,7 +1,11 @@
 package View;
 
-public class MainApplication {
-    public static void main(String args){
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
 
+@SpringBootApplication
+public class MainApplication {
+    public static void main(String[] args){
+        SpringApplication.run(MainApplication.class, args);
     }
 }