diff --git a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/controller/ScenePriorityController.java b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/controller/ScenePriorityController.java
index 6e95f75..1449727 100644
--- a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/controller/ScenePriorityController.java
+++ b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/controller/ScenePriorityController.java
@@ -24,7 +24,6 @@ public class ScenePriorityController {
 
     @Autowired ScenePriorityRepository scenePriorityRepository;
 
-
     @GetMapping("/{automationId}")
     public List<ScenePriority> getByAutomationId(@PathVariable long automationId)
             throws NotFoundException {
diff --git a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/Connector.java b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/Connector.java
index 701a010..325f0dd 100644
--- a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/Connector.java
+++ b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/Connector.java
@@ -1,7 +1,6 @@
 package ch.usi.inf.sa4.sanmarinoes.smarthut.models;
 
 import java.util.Set;
-import java.util.function.BiConsumer;
 import java.util.function.Function;
 
 /**
diff --git a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/Curtains.java b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/Curtains.java
index d9e8d98..af2fd40 100644
--- a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/Curtains.java
+++ b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/Curtains.java
@@ -3,8 +3,8 @@ package ch.usi.inf.sa4.sanmarinoes.smarthut.models;
 import javax.persistence.Entity;
 
 /**
- * Represents a curtain. The intensity represents how much the curtains are opened,
- * 0 is completely closed 100 is completely open
+ * Represents a curtain. The intensity represents how much the curtains are opened, 0 is completely
+ * closed 100 is completely open
  */
 @Entity
 public class Curtains extends Dimmable {
diff --git a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/DimmableRepository.java b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/DimmableRepository.java
index be791c9..dffbbdb 100644
--- a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/DimmableRepository.java
+++ b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/DimmableRepository.java
@@ -1,4 +1,3 @@
 package ch.usi.inf.sa4.sanmarinoes.smarthut.models;
 
-public interface DimmableRepository<T extends Dimmable> extends SwitchableRepository<T> {
-}
+public interface DimmableRepository<T extends Dimmable> extends SwitchableRepository<T> {}
diff --git a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/Room.java b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/Room.java
index 73d7794..43b7e35 100644
--- a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/Room.java
+++ b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/Room.java
@@ -2,7 +2,6 @@ package ch.usi.inf.sa4.sanmarinoes.smarthut.models;
 
 import ch.usi.inf.sa4.sanmarinoes.smarthut.config.GsonExclude;
 import io.swagger.annotations.ApiModelProperty;
-import java.util.HashSet;
 import java.util.Set;
 import javax.persistence.*;
 import javax.validation.constraints.NotNull;
@@ -36,7 +35,7 @@ public class Room {
 
     @OneToMany(mappedBy = "room", orphanRemoval = true)
     @GsonExclude
-    private Set<Device> devices = new HashSet<>();
+    private Set<Device> devices;
 
     /**
      * User that owns the house this room is in as a foreign key id. To use when updating and
diff --git a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/ThermostatRepository.java b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/ThermostatRepository.java
index 290ebf5..768b882 100644
--- a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/ThermostatRepository.java
+++ b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/ThermostatRepository.java
@@ -24,7 +24,6 @@ public interface ThermostatRepository extends DeviceRepository<Thermostat> {
      * @param thermostatRoomId room ID of the thermostat
      * @return an optional big decimal, empty if none found
      */
-    @Query(
-            "SELECT AVG(s.value) FROM Sensor s JOIN s.room r WHERE s.sensor = ?2 AND r.id = ?1")
+    @Query("SELECT AVG(s.value) FROM Sensor s JOIN s.room r WHERE s.sensor = ?2 AND r.id = ?1")
     Optional<BigDecimal> getAverageTemperature(Long thermostatRoomId, Sensor.SensorType sensorType);
 }
diff --git a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/service/DevicePropagationService.java b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/service/DevicePropagationService.java
index 8df15ea..ae004a4 100644
--- a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/service/DevicePropagationService.java
+++ b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/service/DevicePropagationService.java
@@ -13,9 +13,19 @@ import org.springframework.stereotype.Component;
 @Component
 public class DevicePropagationService {
 
-    @Autowired private SensorSocketEndpoint endpoint;
-    @Autowired private EagerUserRepository userRepository;
-    @Autowired private DeviceRepository<Device> deviceRepository;
+    private final SensorSocketEndpoint endpoint;
+    private final EagerUserRepository userRepository;
+    private final DeviceRepository<Device> deviceRepository;
+
+    @Autowired
+    public DevicePropagationService(
+            SensorSocketEndpoint endpoint,
+            EagerUserRepository userRepository,
+            DeviceRepository<Device> deviceRepository) {
+        this.endpoint = endpoint;
+        this.userRepository = userRepository;
+        this.deviceRepository = deviceRepository;
+    }
 
     void propagateUpdateAsGuest(Device device, User host, User guest) {
         final Set<User> guests = Set.copyOf(host.getGuests());
diff --git a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/service/JWTUserDetailsService.java b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/service/JWTUserDetailsService.java
index 7dff142..8ab5f8a 100644
--- a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/service/JWTUserDetailsService.java
+++ b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/service/JWTUserDetailsService.java
@@ -1,9 +1,8 @@
 package ch.usi.inf.sa4.sanmarinoes.smarthut.service;
 
-import java.util.Set;
-
 import ch.usi.inf.sa4.sanmarinoes.smarthut.models.User;
 import ch.usi.inf.sa4.sanmarinoes.smarthut.models.UserRepository;
+import java.util.Set;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.security.core.*;
 import org.springframework.security.core.userdetails.UserDetails;
diff --git a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/service/SceneService.java b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/service/SceneService.java
index 71bf6d1..0fcf1f8 100644
--- a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/service/SceneService.java
+++ b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/service/SceneService.java
@@ -3,16 +3,23 @@ package ch.usi.inf.sa4.sanmarinoes.smarthut.service;
 import ch.usi.inf.sa4.sanmarinoes.smarthut.models.*;
 import java.util.ArrayList;
 import java.util.List;
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
 
 @Component
 public class SceneService {
 
-    @Autowired private DeviceRepository<Device> deviceRepository;
-    @Autowired private DevicePopulationService devicePopulationService;
-    @Autowired private DevicePropagationService devicePropagationService;
-    @Autowired private StateRepository<State<?>> stateRepository;
+    private final DevicePopulationService devicePopulationService;
+    private final DevicePropagationService devicePropagationService;
+    private final StateRepository<State<?>> stateRepository;
+
+    public SceneService(
+            DevicePopulationService devicePopulationService,
+            DevicePropagationService devicePropagationService,
+            StateRepository<State<?>> stateRepository) {
+        this.devicePopulationService = devicePopulationService;
+        this.devicePropagationService = devicePropagationService;
+        this.stateRepository = stateRepository;
+    }
 
     private List<Device> copyStatesToDevices(Scene fromScene) {
         final List<Device> updated = new ArrayList<>(fromScene.getStates().size());
diff --git a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/service/ThermostatService.java b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/service/ThermostatService.java
index 100d77d..d11e76e 100644
--- a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/service/ThermostatService.java
+++ b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/service/ThermostatService.java
@@ -77,7 +77,9 @@ public class ThermostatService {
         Optional<BigDecimal> average;
 
         if (thermostat.isUseExternalSensors()) {
-            average = thermostatRepository.getAverageTemperature(thermostat.getRoomId(), Sensor.SensorType.TEMPERATURE);
+            average =
+                    thermostatRepository.getAverageTemperature(
+                            thermostat.getRoomId(), Sensor.SensorType.TEMPERATURE);
 
         } else {
             return thermostat.getInternalSensorTemperature();