diff --git a/spring-boot-groovy/src/main/groovy/com/baeldung/app/SpringBootGroovyApplication.groovy b/spring-boot-groovy/src/main/groovy/com/baeldung/app/SpringBootGroovyApplication.groovy
deleted file mode 100644
index 226a2ff53d..0000000000
--- a/spring-boot-groovy/src/main/groovy/com/baeldung/app/SpringBootGroovyApplication.groovy
+++ /dev/null
@@ -1,13 +0,0 @@
-package com.baeldung.app
-
-import org.springframework.boot.SpringApplication
-import org.springframework.boot.autoconfigure.SpringBootApplication
-
-import com.baeldung.app.SpringBootGroovyApplication
-
-@SpringBootApplication
-class SpringBootGroovyApplication {
-    static void main(String[] args) {
-        SpringApplication.run SpringBootGroovyApplication, args
-    }
-}
diff --git a/spring-boot-groovy/src/main/groovy/com/baeldung/app/controller/TodoController.groovy b/spring-boot-groovy/src/main/groovy/com/baeldung/app/controller/TodoController.groovy
deleted file mode 100644
index 02f6d0223b..0000000000
--- a/spring-boot-groovy/src/main/groovy/com/baeldung/app/controller/TodoController.groovy
+++ /dev/null
@@ -1,48 +0,0 @@
-package com.baeldung.app.controller
-
-import org.springframework.beans.factory.annotation.Autowired
-import org.springframework.web.bind.annotation.DeleteMapping
-import org.springframework.web.bind.annotation.GetMapping
-import org.springframework.web.bind.annotation.PathVariable
-import org.springframework.web.bind.annotation.PostMapping
-import org.springframework.web.bind.annotation.PutMapping
-import org.springframework.web.bind.annotation.RequestBody
-import org.springframework.web.bind.annotation.RequestMapping
-import org.springframework.web.bind.annotation.RequestMethod
-import org.springframework.web.bind.annotation.RestController
-
-import com.baeldung.app.entity.Todo
-import com.baeldung.app.service.TodoService
-
-@RestController
-@RequestMapping('todo')
-public class TodoController {
-
-    @Autowired
-    TodoService todoService
-
-    @GetMapping
-    List<Todo> getAllTodoList(){
-        todoService.findAll()
-    }
-
-    @PostMapping
-    Todo saveTodo(@RequestBody Todo todo){
-        todoService.saveTodo todo
-    }
-
-    @PutMapping
-    Todo updateTodo(@RequestBody Todo todo){
-        todoService.updateTodo todo
-    }
-
-    @DeleteMapping('/{todoId}')
-    deleteTodo(@PathVariable Integer todoId){
-        todoService.deleteTodo todoId
-    }
-
-    @GetMapping('/{todoId}')
-    Todo getTodoById(@PathVariable Integer todoId){
-        todoService.findById todoId
-    }
-}
\ No newline at end of file
diff --git a/spring-boot-groovy/src/main/groovy/com/baeldung/app/entity/Todo.groovy b/spring-boot-groovy/src/main/groovy/com/baeldung/app/entity/Todo.groovy
deleted file mode 100644
index 9f1253c5b3..0000000000
--- a/spring-boot-groovy/src/main/groovy/com/baeldung/app/entity/Todo.groovy
+++ /dev/null
@@ -1,23 +0,0 @@
-package com.baeldung.app.entity
-
-import javax.persistence.Column
-import javax.persistence.Entity
-import javax.persistence.GeneratedValue
-import javax.persistence.GenerationType
-import javax.persistence.Id
-import javax.persistence.Table
-
-@Entity
-@Table(name = 'todo')
-class Todo {
-    @Id
-    @GeneratedValue(strategy = GenerationType.IDENTITY)
-    Integer id
-    
-    @Column
-    String task
-    
-    @Column
-    Boolean isCompleted
-
-}
diff --git a/spring-boot-groovy/src/main/groovy/com/baeldung/app/repository/TodoRepository.groovy b/spring-boot-groovy/src/main/groovy/com/baeldung/app/repository/TodoRepository.groovy
deleted file mode 100644
index c0b35cc37d..0000000000
--- a/spring-boot-groovy/src/main/groovy/com/baeldung/app/repository/TodoRepository.groovy
+++ /dev/null
@@ -1,9 +0,0 @@
-package com.baeldung.app.repository
-
-import org.springframework.data.jpa.repository.JpaRepository
-import org.springframework.stereotype.Repository
-
-import com.baeldung.app.entity.Todo
-
-@Repository
-interface TodoRepository extends JpaRepository<Todo, Integer> {}
\ No newline at end of file
diff --git a/spring-boot-groovy/src/main/groovy/com/baeldung/app/service/TodoService.groovy b/spring-boot-groovy/src/main/groovy/com/baeldung/app/service/TodoService.groovy
deleted file mode 100644
index 0a59d93330..0000000000
--- a/spring-boot-groovy/src/main/groovy/com/baeldung/app/service/TodoService.groovy
+++ /dev/null
@@ -1,16 +0,0 @@
-package com.baeldung.app.service
-
-import com.baeldung.app.entity.Todo
-
-interface TodoService {
-
-    List<Todo> findAll()
-
-    Todo findById(Integer todoId)
-
-    Todo saveTodo(Todo todo)
-
-    Todo updateTodo(Todo todo)
-
-    Todo deleteTodo(Integer todoId)
-}
diff --git a/spring-boot-groovy/src/main/groovy/com/baeldung/app/service/impl/TodoServiceImpl.groovy b/spring-boot-groovy/src/main/groovy/com/baeldung/app/service/impl/TodoServiceImpl.groovy
deleted file mode 100644
index 6d0ee03a9f..0000000000
--- a/spring-boot-groovy/src/main/groovy/com/baeldung/app/service/impl/TodoServiceImpl.groovy
+++ /dev/null
@@ -1,40 +0,0 @@
-package com.baeldung.app.service.impl
-
-import org.springframework.beans.factory.annotation.Autowired
-import org.springframework.stereotype.Service
-
-import com.baeldung.app.entity.Todo
-import com.baeldung.app.repository.TodoRepository
-import com.baeldung.app.service.TodoService
-
-@Service
-class TodoServiceImpl implements TodoService {
-
-    @Autowired
-    TodoRepository todoRepository
-
-    @Override
-    List<Todo> findAll() {
-        todoRepository.findAll()
-    }
-
-    @Override
-    Todo findById(Integer todoId) {
-        todoRepository.findById todoId get()
-    }
-
-    @Override
-    Todo saveTodo(Todo todo){
-        todoRepository.save todo
-    }
-
-    @Override
-    Todo updateTodo(Todo todo){
-        todoRepository.save todo
-    }
-
-    @Override
-    Todo deleteTodo(Integer todoId){
-        todoRepository.deleteById todoId
-    }
-}
diff --git a/spring-boot-groovy/src/test/groovy/com/baeldung/app/TodoAppUnitTest.groovy b/spring-boot-groovy/src/test/groovy/com/baeldung/app/TodoAppUnitTest.groovy
deleted file mode 100644
index faf2d64ba7..0000000000
--- a/spring-boot-groovy/src/test/groovy/com/baeldung/app/TodoAppUnitTest.groovy
+++ /dev/null
@@ -1,97 +0,0 @@
-package com.baeldung.app
-
-import static org.junit.jupiter.api.Assertions.assertEquals
-import static org.junit.jupiter.api.Assertions.assertTrue
-
-import org.junit.BeforeClass
-import org.junit.Test
-import org.junit.runner.RunWith
-import org.springframework.boot.test.context.SpringBootTest
-import org.springframework.http.HttpStatus
-import org.springframework.http.MediaType
-import org.springframework.test.context.event.annotation.BeforeTestClass
-import org.springframework.test.context.junit4.SpringRunner
-
-import com.baeldung.app.entity.Todo
-
-import io.restassured.RestAssured
-import io.restassured.response.Response
-
-class TodoAppUnitTest {
-    static API_ROOT = 'http://localhost:8081/todo'
-    static readingTodoId
-    static writingTodoId
-
-    @BeforeClass
-    static void populateDummyData() {
-        Todo readingTodo = new Todo(task: 'Reading', isCompleted: false)
-        Todo writingTodo = new Todo(task: 'Writing', isCompleted: false)
-
-        final Response readingResponse = 
-          RestAssured.given()
-            .contentType(MediaType.APPLICATION_JSON_VALUE)
-              .body(readingTodo).post(API_ROOT)
-              
-        Todo cookingTodoResponse = readingResponse.as Todo.class
-        readingTodoId = cookingTodoResponse.getId()
-
-        final Response writingResponse = 
-          RestAssured.given()
-            .contentType(MediaType.APPLICATION_JSON_VALUE)
-              .body(writingTodo).post(API_ROOT)
-              
-        Todo writingTodoResponse = writingResponse.as Todo.class
-        writingTodoId = writingTodoResponse.getId()
-    }
-
-    @Test
-    void whenGetAllTodoList_thenOk(){
-        final Response response = RestAssured.get(API_ROOT)
-        
-        assertEquals HttpStatus.OK.value(),response.getStatusCode()
-        assertTrue response.as(List.class).size() > 0
-    }
-
-    @Test
-    void whenGetTodoById_thenOk(){
-        final Response response = 
-          RestAssured.get("$API_ROOT/$readingTodoId")
-        
-        assertEquals HttpStatus.OK.value(),response.getStatusCode()
-        Todo todoResponse = response.as Todo.class
-        assertEquals readingTodoId,todoResponse.getId()
-    }
-
-    @Test
-    void whenUpdateTodoById_thenOk(){
-        Todo todo = new Todo(id:readingTodoId, isCompleted: true)
-        final Response response = 
-          RestAssured.given()
-            .contentType(MediaType.APPLICATION_JSON_VALUE)
-              .body(todo).put(API_ROOT)
-              
-        assertEquals HttpStatus.OK.value(),response.getStatusCode()
-        Todo todoResponse = response.as Todo.class
-        assertTrue todoResponse.getIsCompleted()
-    }
-
-    @Test
-    void whenDeleteTodoById_thenOk(){
-        final Response response = 
-          RestAssured.given()
-            .delete("$API_ROOT/$writingTodoId")
-        
-        assertEquals HttpStatus.OK.value(),response.getStatusCode()
-    }
-
-    @Test
-    void whenSaveTodo_thenOk(){
-        Todo todo = new Todo(task: 'Blogging', isCompleted: false)
-        final Response response = 
-          RestAssured.given()
-            .contentType(MediaType.APPLICATION_JSON_VALUE)
-              .body(todo).post(API_ROOT)
-              
-        assertEquals HttpStatus.OK.value(),response.getStatusCode()
-    }
-}
\ No newline at end of file