Add checkstyle configuration

39 files changed, 99 insertions, 73 deletions

diff --git a/backend/src/main/java/org/luxons/sevenwonders/actions/ChooseNameAction.java b/backend/src/main/java/org/luxons/sevenwonders/actions/ChooseNameAction.java
index 42a26f37..670e44ff 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/actions/ChooseNameAction.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/actions/ChooseNameAction.java
@@ -6,7 +6,7 @@ import javax.validation.constraints.Size;
 public class ChooseNameAction {
 
     @NotNull
-    @Size(min=2, max=20)
+    @Size(min = 2, max = 20)
     private String playerName;
 
     public String getPlayerName() {
diff --git a/backend/src/main/java/org/luxons/sevenwonders/actions/CreateGameAction.java b/backend/src/main/java/org/luxons/sevenwonders/actions/CreateGameAction.java
index ce1783c0..00a43971 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/actions/CreateGameAction.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/actions/CreateGameAction.java
@@ -6,7 +6,7 @@ import javax.validation.constraints.Size;
 public class CreateGameAction {
 
     @NotNull
-    @Size(min=2, max=30)
+    @Size(min = 2, max = 30)
     private String gameName;
 
     public String getGameName() {
diff --git a/backend/src/main/java/org/luxons/sevenwonders/config/WebSocketConfig.java b/backend/src/main/java/org/luxons/sevenwonders/config/WebSocketConfig.java
index d54d8da4..7ac53250 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/config/WebSocketConfig.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/config/WebSocketConfig.java
@@ -48,4 +48,4 @@ public class WebSocketConfig extends AbstractWebSocketMessageBrokerConfigurer {
     public void configureClientInboundChannel(ChannelRegistration registration) {
         registration.setInterceptors(topicSubscriptionInterceptor);
     }
-}
\ No newline at end of file
+}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/controllers/GameBrowserController.java b/backend/src/main/java/org/luxons/sevenwonders/controllers/GameBrowserController.java
index 8d00994c..46e4531e 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/controllers/GameBrowserController.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/controllers/GameBrowserController.java
@@ -35,8 +35,8 @@ public class GameBrowserController {
     private final SimpMessagingTemplate template;
 
     @Autowired
-    public GameBrowserController(LobbyController lobbyController, LobbyRepository lobbyRepository, PlayerRepository playerRepository,
-                                 SimpMessagingTemplate template) {
+    public GameBrowserController(LobbyController lobbyController, LobbyRepository lobbyRepository,
+            PlayerRepository playerRepository, SimpMessagingTemplate template) {
         this.lobbyController = lobbyController;
         this.lobbyRepository = lobbyRepository;
         this.playerRepository = playerRepository;
diff --git a/backend/src/main/java/org/luxons/sevenwonders/controllers/GameController.java b/backend/src/main/java/org/luxons/sevenwonders/controllers/GameController.java
index 390d3e83..7b03a976 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/controllers/GameController.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/controllers/GameController.java
@@ -4,11 +4,11 @@ import java.security.Principal;
 
 import org.luxons.sevenwonders.actions.PrepareCardAction;
 import org.luxons.sevenwonders.game.Game;
+import org.luxons.sevenwonders.game.api.PlayerTurnInfo;
+import org.luxons.sevenwonders.game.cards.CardBack;
 import org.luxons.sevenwonders.lobby.Lobby;
 import org.luxons.sevenwonders.lobby.Player;
-import org.luxons.sevenwonders.game.api.PlayerTurnInfo;
 import org.luxons.sevenwonders.output.PreparedCard;
-import org.luxons.sevenwonders.game.cards.CardBack;
 import org.luxons.sevenwonders.repositories.PlayerRepository;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
diff --git a/backend/src/main/java/org/luxons/sevenwonders/errors/ErrorType.java b/backend/src/main/java/org/luxons/sevenwonders/errors/ErrorType.java
index 1cd18d09..16a40046 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/errors/ErrorType.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/errors/ErrorType.java
@@ -1,5 +1,8 @@
 package org.luxons.sevenwonders.errors;
 
 enum ErrorType {
-    USER_INPUT, VALIDATION, CLIENT, SERVER
+    USER_INPUT,
+    VALIDATION,
+    CLIENT,
+    SERVER
 }
diff --git a/backend/src/main/java/org/luxons/sevenwonders/errors/UIError.java b/backend/src/main/java/org/luxons/sevenwonders/errors/UIError.java
index ee5fcbe0..fbc1ee1d 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/errors/UIError.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/errors/UIError.java
@@ -46,7 +46,7 @@ public class UIError {
 
     private UIErrorDetail convertError(ObjectError objectError) {
         if (objectError instanceof FieldError) {
-            return new UIErrorDetail((FieldError)objectError);
+            return new UIErrorDetail((FieldError) objectError);
         } else {
             return new UIErrorDetail(objectError);
         }
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/api/PlayerMove.java b/backend/src/main/java/org/luxons/sevenwonders/game/api/PlayerMove.java
index 28b64fbb..179656cb 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/game/api/PlayerMove.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/game/api/PlayerMove.java
@@ -2,7 +2,6 @@ package org.luxons.sevenwonders.game.api;
 
 import java.util.ArrayList;
 import java.util.List;
-
 import javax.validation.constraints.NotNull;
 
 import org.luxons.sevenwonders.game.moves.MoveType;
@@ -44,6 +43,6 @@ public class PlayerMove {
 
     @Override
     public String toString() {
-        return type +  " '" + cardName + '\'';
+        return type + " '" + cardName + '\'';
     }
 }
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/boards/Board.java b/backend/src/main/java/org/luxons/sevenwonders/game/boards/Board.java
index 16f5cf5a..a59bbfae 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/game/boards/Board.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/game/boards/Board.java
@@ -157,10 +157,10 @@ public class Board {
 
     private int computePointsForCards(Table table, Color color) {
         return playedCards.stream()
-                .filter(c -> c.getColor() == color)
-                .flatMap(c -> c.getEffects().stream())
-                .mapToInt(e -> e.computePoints(table, playerIndex))
-                .sum();
+                          .filter(c -> c.getColor() == color)
+                          .flatMap(c -> c.getEffects().stream())
+                          .mapToInt(e -> e.computePoints(table, playerIndex))
+                          .sum();
     }
 
     private int computeGoldPoints() {
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/boards/ScienceType.java b/backend/src/main/java/org/luxons/sevenwonders/game/boards/ScienceType.java
index 06408b9e..f1b14c6d 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/game/boards/ScienceType.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/game/boards/ScienceType.java
@@ -1,5 +1,7 @@
 package org.luxons.sevenwonders.game.boards;
 
 public enum ScienceType {
-    COMPASS, WHEEL, TABLET
+    COMPASS,
+    WHEEL,
+    TABLET
 }
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/cards/Card.java b/backend/src/main/java/org/luxons/sevenwonders/game/cards/Card.java
index de674011..473a1bcf 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/game/cards/Card.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/game/cards/Card.java
@@ -105,7 +105,7 @@ public class Card {
         if (o == null || getClass() != o.getClass()) {
             return false;
         }
-        Card card = (Card)o;
+        Card card = (Card) o;
         return Objects.equals(name, card.name);
     }
 
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/cards/Color.java b/backend/src/main/java/org/luxons/sevenwonders/game/cards/Color.java
index 5b4e4473..80d06c55 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/game/cards/Color.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/game/cards/Color.java
@@ -1,5 +1,11 @@
 package org.luxons.sevenwonders.game.cards;
 
 public enum Color {
-    BROWN, GREY, YELLOW, BLUE, GREEN, RED, PURPLE
+    BROWN,
+    GREY,
+    YELLOW,
+    BLUE,
+    GREEN,
+    RED,
+    PURPLE
 }
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/cards/HandRotationDirection.java b/backend/src/main/java/org/luxons/sevenwonders/game/cards/HandRotationDirection.java
index 9c4f4b02..f3902fb5 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/game/cards/HandRotationDirection.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/game/cards/HandRotationDirection.java
@@ -1,7 +1,8 @@
 package org.luxons.sevenwonders.game.cards;
 
 public enum HandRotationDirection {
-    LEFT(-1), RIGHT(1);
+    LEFT(-1),
+    RIGHT(1);
 
     private final int indexOffset;
 
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/data/GameDefinitionLoader.java b/backend/src/main/java/org/luxons/sevenwonders/game/data/GameDefinitionLoader.java
index f0da6d63..6d464388 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/game/data/GameDefinitionLoader.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/game/data/GameDefinitionLoader.java
@@ -71,7 +71,8 @@ public class GameDefinitionLoader {
     }
 
     private static Gson createGson() {
-        Type resourceTypeList = new TypeToken<List<ResourceType>>() {}.getType();
+        Type resourceTypeList = new TypeToken<List<ResourceType>>() {
+        }.getType();
         return new GsonBuilder().disableHtmlEscaping()
                                 .registerTypeAdapter(Resources.class, new ResourcesSerializer())
                                 .registerTypeAdapter(ResourceType.class, new ResourceTypeSerializer())
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderSide.java b/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderSide.java
index 08c85f57..34091350 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderSide.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderSide.java
@@ -1,5 +1,6 @@
 package org.luxons.sevenwonders.game.data.definitions;
 
 public enum WonderSide {
-    A, B
+    A,
+    B
 }
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderSideDefinition.java b/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderSideDefinition.java
index 9b2bc2d5..c84bba4e 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderSideDefinition.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderSideDefinition.java
@@ -7,7 +7,8 @@ import org.luxons.sevenwonders.game.Settings;
 import org.luxons.sevenwonders.game.resources.ResourceType;
 import org.luxons.sevenwonders.game.wonders.WonderStage;
 
-@SuppressWarnings("unused,MismatchedQueryAndUpdateOfCollection") // the fields are injected by Gson
+// the fields are injected by Gson
+@SuppressWarnings("unused,MismatchedQueryAndUpdateOfCollection")
 class WonderSideDefinition {
 
     private ResourceType initialResource;
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/NumericEffectSerializer.java b/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/NumericEffectSerializer.java
index c1a51f24..c0a75d80 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/NumericEffectSerializer.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/NumericEffectSerializer.java
@@ -21,11 +21,11 @@ public class NumericEffectSerializer implements JsonSerializer<Effect>, JsonDese
     public JsonElement serialize(Effect effect, Type typeOfSrc, JsonSerializationContext context) {
         int value;
         if (MilitaryReinforcements.class.equals(typeOfSrc)) {
-            value =  ((MilitaryReinforcements)effect).getCount();
+            value = ((MilitaryReinforcements) effect).getCount();
         } else if (GoldIncrease.class.equals(typeOfSrc)) {
-            value =  ((GoldIncrease)effect).getAmount();
+            value = ((GoldIncrease) effect).getAmount();
         } else if (RawPointsIncrease.class.equals(typeOfSrc)) {
-            value =  ((RawPointsIncrease)effect).getPoints();
+            value = ((RawPointsIncrease) effect).getPoints();
         } else {
             throw new IllegalArgumentException("Unknown numeric effect " + typeOfSrc.getTypeName());
         }
@@ -33,8 +33,8 @@ public class NumericEffectSerializer implements JsonSerializer<Effect>, JsonDese
     }
 
     @Override
-    public Effect deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws
-            JsonParseException {
+    public Effect deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
+            throws JsonParseException {
         int value = json.getAsInt();
         if (MilitaryReinforcements.class.equals(typeOfT)) {
             return new MilitaryReinforcements(value);
@@ -45,4 +45,4 @@ public class NumericEffectSerializer implements JsonSerializer<Effect>, JsonDese
         }
         throw new IllegalArgumentException("Unknown numeric effet " + typeOfT.getTypeName());
     }
-}
\ No newline at end of file
+}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ProductionIncreaseSerializer.java b/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ProductionIncreaseSerializer.java
index b1467900..c3eb1386 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ProductionIncreaseSerializer.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ProductionIncreaseSerializer.java
@@ -13,8 +13,8 @@ import com.google.gson.JsonPrimitive;
 import com.google.gson.JsonSerializationContext;
 import com.google.gson.JsonSerializer;
 
-public class ProductionIncreaseSerializer
-        implements JsonSerializer<ProductionIncrease>, JsonDeserializer<ProductionIncrease> {
+public class ProductionIncreaseSerializer implements JsonSerializer<ProductionIncrease>,
+        JsonDeserializer<ProductionIncrease> {
 
     @Override
     public JsonElement serialize(ProductionIncrease productionIncrease, Type typeOfSrc,
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ProductionSerializer.java b/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ProductionSerializer.java
index eead39c3..3fa6b720 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ProductionSerializer.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ProductionSerializer.java
@@ -39,10 +39,11 @@ public class ProductionSerializer implements JsonSerializer<Production>, JsonDes
         if (choices.size() > 1) {
             throw new IllegalArgumentException("Cannot serialize a production with more than one choice");
         }
-        String str = choices.get(0).stream()
-                .map(ResourceType::getSymbol)
-                .map(Object::toString)
-                .collect(Collectors.joining("/"));
+        String str = choices.get(0)
+                            .stream()
+                            .map(ResourceType::getSymbol)
+                            .map(Object::toString)
+                            .collect(Collectors.joining("/"));
         return context.serialize(str);
     }
 
@@ -51,8 +52,8 @@ public class ProductionSerializer implements JsonSerializer<Production>, JsonDes
     }
 
     @Override
-    public Production deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws
-            JsonParseException {
+    public Production deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
+            throws JsonParseException {
         String resourcesStr = json.getAsString();
         Production production = new Production();
         if (resourcesStr.contains("/")) {
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ResourceTypeSerializer.java b/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ResourceTypeSerializer.java
index 145063eb..d2a49180 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ResourceTypeSerializer.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ResourceTypeSerializer.java
@@ -2,6 +2,8 @@ package org.luxons.sevenwonders.game.data.serializers;
 
 import java.lang.reflect.Type;
 
+import org.luxons.sevenwonders.game.resources.ResourceType;
+
 import com.google.gson.JsonDeserializationContext;
 import com.google.gson.JsonDeserializer;
 import com.google.gson.JsonElement;
@@ -9,7 +11,6 @@ import com.google.gson.JsonParseException;
 import com.google.gson.JsonPrimitive;
 import com.google.gson.JsonSerializationContext;
 import com.google.gson.JsonSerializer;
-import org.luxons.sevenwonders.game.resources.ResourceType;
 
 public class ResourceTypeSerializer implements JsonSerializer<ResourceType>, JsonDeserializer<ResourceType> {
 
@@ -19,8 +20,8 @@ public class ResourceTypeSerializer implements JsonSerializer<ResourceType>, Jso
     }
 
     @Override
-    public ResourceType deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws
-            JsonParseException {
+    public ResourceType deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
+            throws JsonParseException {
         String str = json.getAsString();
         if (str.isEmpty()) {
             throw new IllegalArgumentException("Empty string is not a valid resource type");
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ResourceTypesSerializer.java b/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ResourceTypesSerializer.java
index 8aca5561..89d3e723 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ResourceTypesSerializer.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ResourceTypesSerializer.java
@@ -5,6 +5,8 @@ import java.util.ArrayList;
 import java.util.List;
 import java.util.stream.Collectors;
 
+import org.luxons.sevenwonders.game.resources.ResourceType;
+
 import com.google.gson.JsonDeserializationContext;
 import com.google.gson.JsonDeserializer;
 import com.google.gson.JsonElement;
@@ -12,22 +14,19 @@ import com.google.gson.JsonParseException;
 import com.google.gson.JsonPrimitive;
 import com.google.gson.JsonSerializationContext;
 import com.google.gson.JsonSerializer;
-import org.luxons.sevenwonders.game.resources.ResourceType;
 
-public class ResourceTypesSerializer implements JsonSerializer<List<ResourceType>>, JsonDeserializer<List<ResourceType>> {
+public class ResourceTypesSerializer implements JsonSerializer<List<ResourceType>>,
+        JsonDeserializer<List<ResourceType>> {
 
     @Override
     public JsonElement serialize(List<ResourceType> resources, Type typeOfSrc, JsonSerializationContext context) {
-        String s = resources.stream()
-                            .map(ResourceType::getSymbol)
-                            .map(Object::toString)
-                            .collect(Collectors.joining());
+        String s = resources.stream().map(ResourceType::getSymbol).map(Object::toString).collect(Collectors.joining());
         return new JsonPrimitive(s);
     }
 
     @Override
-    public List<ResourceType> deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws
-            JsonParseException {
+    public List<ResourceType> deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
+            throws JsonParseException {
         String s = json.getAsString();
         List<ResourceType> resources = new ArrayList<>();
         for (char c : s.toCharArray()) {
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ResourcesSerializer.java b/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ResourcesSerializer.java
index efeafd15..fb6c4e4b 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ResourcesSerializer.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ResourcesSerializer.java
@@ -4,6 +4,9 @@ import java.lang.reflect.Type;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
+import org.luxons.sevenwonders.game.resources.ResourceType;
+import org.luxons.sevenwonders.game.resources.Resources;
+
 import com.google.gson.JsonDeserializationContext;
 import com.google.gson.JsonDeserializer;
 import com.google.gson.JsonElement;
@@ -12,8 +15,6 @@ import com.google.gson.JsonParseException;
 import com.google.gson.JsonPrimitive;
 import com.google.gson.JsonSerializationContext;
 import com.google.gson.JsonSerializer;
-import org.luxons.sevenwonders.game.resources.ResourceType;
-import org.luxons.sevenwonders.game.resources.Resources;
 
 public class ResourcesSerializer implements JsonSerializer<Resources>, JsonDeserializer<Resources> {
 
@@ -29,8 +30,8 @@ public class ResourcesSerializer implements JsonSerializer<Resources>, JsonDeser
     }
 
     @Override
-    public Resources deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws
-            JsonParseException {
+    public Resources deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
+            throws JsonParseException {
         String s = json.getAsString();
         Resources resources = new Resources();
         for (char c : s.toCharArray()) {
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ScienceProgressSerializer.java b/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ScienceProgressSerializer.java
index b6e38540..cecad405 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ScienceProgressSerializer.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ScienceProgressSerializer.java
@@ -40,8 +40,8 @@ public class ScienceProgressSerializer implements JsonSerializer<ScienceProgress
     }
 
     @Override
-    public ScienceProgress deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws
-            JsonParseException {
+    public ScienceProgress deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
+            throws JsonParseException {
         String s = json.getAsString();
         ScienceProgress scienceProgress = new ScienceProgress();
         Science science = new Science();
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/effects/Discount.java b/backend/src/main/java/org/luxons/sevenwonders/game/effects/Discount.java
index 3a44574b..976ebf35 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/game/effects/Discount.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/game/effects/Discount.java
@@ -5,8 +5,8 @@ import java.util.List;
 
 import org.luxons.sevenwonders.game.boards.Board;
 import org.luxons.sevenwonders.game.resources.Provider;
-import org.luxons.sevenwonders.game.resources.TradingRules;
 import org.luxons.sevenwonders.game.resources.ResourceType;
+import org.luxons.sevenwonders.game.resources.TradingRules;
 
 public class Discount extends InstantOwnBoardEffect {
 
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/effects/GoldIncrease.java b/backend/src/main/java/org/luxons/sevenwonders/game/effects/GoldIncrease.java
index 79e7bd1a..1519e389 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/game/effects/GoldIncrease.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/game/effects/GoldIncrease.java
@@ -29,7 +29,7 @@ public class GoldIncrease extends InstantOwnBoardEffect {
         if (o == null || getClass() != o.getClass()) {
             return false;
         }
-        GoldIncrease that = (GoldIncrease)o;
+        GoldIncrease that = (GoldIncrease) o;
         return amount == that.amount;
     }
 
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/effects/MilitaryReinforcements.java b/backend/src/main/java/org/luxons/sevenwonders/game/effects/MilitaryReinforcements.java
index b08e2f59..3accdd62 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/game/effects/MilitaryReinforcements.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/game/effects/MilitaryReinforcements.java
@@ -29,7 +29,7 @@ public class MilitaryReinforcements extends InstantOwnBoardEffect {
         if (o == null || getClass() != o.getClass()) {
             return false;
         }
-        MilitaryReinforcements that = (MilitaryReinforcements)o;
+        MilitaryReinforcements that = (MilitaryReinforcements) o;
         return count == that.count;
     }
 
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/effects/ProductionIncrease.java b/backend/src/main/java/org/luxons/sevenwonders/game/effects/ProductionIncrease.java
index 30bcc625..514c65db 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/game/effects/ProductionIncrease.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/game/effects/ProductionIncrease.java
@@ -43,7 +43,7 @@ public class ProductionIncrease extends InstantOwnBoardEffect {
         if (o == null || getClass() != o.getClass()) {
             return false;
         }
-        ProductionIncrease that = (ProductionIncrease)o;
+        ProductionIncrease that = (ProductionIncrease) o;
         return Objects.equals(production, that.production);
     }
 
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/effects/RawPointsIncrease.java b/backend/src/main/java/org/luxons/sevenwonders/game/effects/RawPointsIncrease.java
index 0d117cec..fce8fa3e 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/game/effects/RawPointsIncrease.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/game/effects/RawPointsIncrease.java
@@ -29,7 +29,7 @@ public class RawPointsIncrease extends EndGameEffect {
         if (o == null || getClass() != o.getClass()) {
             return false;
         }
-        RawPointsIncrease that = (RawPointsIncrease)o;
+        RawPointsIncrease that = (RawPointsIncrease) o;
         return points == that.points;
     }
 
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/effects/SpecialAbility.java b/backend/src/main/java/org/luxons/sevenwonders/game/effects/SpecialAbility.java
index 5de87784..cdf67f20 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/game/effects/SpecialAbility.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/game/effects/SpecialAbility.java
@@ -5,6 +5,7 @@ import org.luxons.sevenwonders.game.boards.Board;
 import org.luxons.sevenwonders.game.cards.Card;
 
 public enum SpecialAbility {
+
     /**
      * The player can play the last card of each age instead of discarding it. This card can be played by paying its
      * cost, discarded to gain 3 coins or used in the construction of his or her Wonder.
@@ -22,7 +23,7 @@ public enum SpecialAbility {
     PLAY_DISCARDED,
 
     /**
-     * The player can, at the end of the game, “copy” a Guild of his or her choice (purple card), built by one of his or
+     * The player can, at the end of the game, "copy" a Guild of his or her choice (purple card), built by one of his or
      * her two neighboring cities.
      */
     COPY_GUILD {
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/resources/Production.java b/backend/src/main/java/org/luxons/sevenwonders/game/resources/Production.java
index b7701c27..ea824277 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/game/resources/Production.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/game/resources/Production.java
@@ -79,7 +79,8 @@ public class Production {
         return false;
     }
 
-    private static Set<ResourceType> findFirstAlternativeContaining(List<Set<ResourceType>> alternatives, ResourceType type) {
+    private static Set<ResourceType> findFirstAlternativeContaining(List<Set<ResourceType>> alternatives,
+            ResourceType type) {
         return alternatives.stream().filter(a -> a.contains(type)).findAny().orElse(null);
     }
 
@@ -91,7 +92,7 @@ public class Production {
         if (o == null || getClass() != o.getClass()) {
             return false;
         }
-        Production that = (Production)o;
+        Production that = (Production) o;
         return Objects.equals(fixedResources, that.fixedResources) && Objects.equals(alternativeResources,
                 that.alternativeResources);
     }
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/resources/ResourceType.java b/backend/src/main/java/org/luxons/sevenwonders/game/resources/ResourceType.java
index 46d60123..baad8451 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/game/resources/ResourceType.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/game/resources/ResourceType.java
@@ -13,6 +13,7 @@ public enum ResourceType {
     LOOM('L');
 
     private static final Map<Character, ResourceType> typesPerSymbol = new HashMap<>(7);
+
     static {
         for (ResourceType type : values()) {
             typesPerSymbol.put(type.symbol, type);
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/resources/Resources.java b/backend/src/main/java/org/luxons/sevenwonders/game/resources/Resources.java
index 5bf6f269..f74ae994 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/game/resources/Resources.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/game/resources/Resources.java
@@ -54,7 +54,7 @@ public class Resources {
         if (o == null || getClass() != o.getClass()) {
             return false;
         }
-        Resources resources = (Resources)o;
+        Resources resources = (Resources) o;
         return Objects.equals(quantities, resources.quantities);
     }
 
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/scoring/ScoreBoard.java b/backend/src/main/java/org/luxons/sevenwonders/game/scoring/ScoreBoard.java
index 26b5f8ba..e7cdaedd 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/game/scoring/ScoreBoard.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/game/scoring/ScoreBoard.java
@@ -6,7 +6,7 @@ import java.util.PriorityQueue;
 public class ScoreBoard {
 
     private static final Comparator<PlayerScore> comparator = Comparator.comparing(PlayerScore::getTotalPoints)
-            .thenComparing(PlayerScore::getBoardGold);
+                                                                        .thenComparing(PlayerScore::getBoardGold);
 
     private PriorityQueue<PlayerScore> scores;
 
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/scoring/ScoreCategory.java b/backend/src/main/java/org/luxons/sevenwonders/game/scoring/ScoreCategory.java
index 54976072..a6a9537d 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/game/scoring/ScoreCategory.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/game/scoring/ScoreCategory.java
@@ -1,5 +1,11 @@
 package org.luxons.sevenwonders.game.scoring;
 
 public enum ScoreCategory {
-    CIVIL, SCIENCE, MILITARY, TRADE, GUILD, WONDER, GOLD
+    CIVIL,
+    SCIENCE,
+    MILITARY,
+    TRADE,
+    GUILD,
+    WONDER,
+    GOLD
 }
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/wonders/Wonder.java b/backend/src/main/java/org/luxons/sevenwonders/game/wonders/Wonder.java
index 3ddddd30..73fff305 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/game/wonders/Wonder.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/game/wonders/Wonder.java
@@ -52,7 +52,7 @@ public class Wonder {
     }
 
     public int getNbBuiltStages() {
-        return (int)stages.stream().filter(WonderStage::isBuilt).count();
+        return (int) stages.stream().filter(WonderStage::isBuilt).count();
     }
 
     public String getImage() {
@@ -94,9 +94,9 @@ public class Wonder {
 
     public int computePoints(Table table, int playerIndex) {
         return stages.stream()
-                .filter(WonderStage::isBuilt)
-                .flatMap(c -> c.getEffects().stream())
-                .mapToInt(e -> e.computePoints(table, playerIndex))
-                .sum();
+                     .filter(WonderStage::isBuilt)
+                     .flatMap(c -> c.getEffects().stream())
+                     .mapToInt(e -> e.computePoints(table, playerIndex))
+                     .sum();
     }
 }
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/wonders/WonderStage.java b/backend/src/main/java/org/luxons/sevenwonders/game/wonders/WonderStage.java
index 64d506fc..fc3fc573 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/game/wonders/WonderStage.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/game/wonders/WonderStage.java
@@ -2,11 +2,11 @@ package org.luxons.sevenwonders.game.wonders;
 
 import java.util.List;
 
-import org.luxons.sevenwonders.game.resources.BoughtResources;
 import org.luxons.sevenwonders.game.api.Table;
 import org.luxons.sevenwonders.game.cards.CardBack;
 import org.luxons.sevenwonders.game.cards.Requirements;
 import org.luxons.sevenwonders.game.effects.Effect;
+import org.luxons.sevenwonders.game.resources.BoughtResources;
 
 public class WonderStage {
 
diff --git a/backend/src/main/java/org/luxons/sevenwonders/lobby/Player.java b/backend/src/main/java/org/luxons/sevenwonders/lobby/Player.java
index 6698c476..c0ac6282 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/lobby/Player.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/lobby/Player.java
@@ -1,8 +1,9 @@
 package org.luxons.sevenwonders.lobby;
 
-import com.fasterxml.jackson.annotation.JsonIgnore;
 import org.luxons.sevenwonders.game.Game;
 
+import com.fasterxml.jackson.annotation.JsonIgnore;
+
 public class Player {
 
     private final String username;
diff --git a/backend/src/main/java/org/luxons/sevenwonders/output/PreparedCard.java b/backend/src/main/java/org/luxons/sevenwonders/output/PreparedCard.java
index ac696890..5a122274 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/output/PreparedCard.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/output/PreparedCard.java
@@ -1,7 +1,7 @@
 package org.luxons.sevenwonders.output;
 
-import org.luxons.sevenwonders.lobby.Player;
 import org.luxons.sevenwonders.game.cards.CardBack;
+import org.luxons.sevenwonders.lobby.Player;
 
 public class PreparedCard {
 
diff --git a/backend/src/main/java/org/luxons/sevenwonders/repositories/LobbyRepository.java b/backend/src/main/java/org/luxons/sevenwonders/repositories/LobbyRepository.java
index 0a7b9238..eb573479 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/repositories/LobbyRepository.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/repositories/LobbyRepository.java
@@ -4,9 +4,9 @@ import java.util.Collection;
 import java.util.HashMap;
 import java.util.Map;
 
+import org.luxons.sevenwonders.game.data.GameDefinitionLoader;
 import org.luxons.sevenwonders.lobby.Lobby;
 import org.luxons.sevenwonders.lobby.Player;
-import org.luxons.sevenwonders.game.data.GameDefinitionLoader;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Repository;