make property final which can be made final

missilewars-plugin/src/main/java/de/butzlabben/missilewars/game/MapVoting.java

@@ -23,18 +23,17 @@ import de.butzlabben.missilewars.configuration.arena.Arena;
 import de.butzlabben.missilewars.game.enums.MapChooseProcedure;
 import de.butzlabben.missilewars.game.enums.VoteState;
 import de.butzlabben.missilewars.player.MWPlayer;
-import lombok.Getter;
-import org.bukkit.entity.Player;
-
 import java.util.HashMap;
 import java.util.Map;
 import java.util.function.Function;
 import java.util.stream.Collectors;
+import lombok.Getter;
+import org.bukkit.entity.Player;
 
 public class MapVoting {
 
     private final Map<MWPlayer, Arena> arenaVotes = new HashMap<>();
-    private Game game;
+    private final Game game;
     @Getter private VoteState state = VoteState.NULL;
 
     public MapVoting(Game game) {

missilewars-plugin/src/main/java/de/butzlabben/missilewars/game/equipment/MissileGameEquipment.java

@@ -34,7 +34,7 @@ public class MissileGameEquipment {
 
     private final Game game;
 
-    private List<Missile> missileEquipmentList = new ArrayList<>();
+    private final List<Missile> missileEquipmentList = new ArrayList<>();
 
 
     public MissileGameEquipment(Game game) {

missilewars-plugin/src/main/java/de/butzlabben/missilewars/game/equipment/SpecialGameEquipment.java

@@ -40,7 +40,7 @@ public class SpecialGameEquipment {
     private ItemStack arrow;
     private ItemStack fireball;
 
-    private List<ItemStack> specialEquipmentList = new ArrayList<>();
+    private final List<ItemStack> specialEquipmentList = new ArrayList<>();
 
 
     public SpecialGameEquipment(Game game) {

missilewars-plugin/src/main/java/de/butzlabben/missilewars/game/misc/ScoreboardManager.java

@@ -23,6 +23,9 @@ import de.butzlabben.missilewars.game.Game;
 import de.butzlabben.missilewars.game.Team;
 import de.butzlabben.missilewars.game.enums.GameState;
 import de.butzlabben.missilewars.player.MWPlayer;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
 import lombok.Getter;
 import lombok.RequiredArgsConstructor;
 import lombok.Setter;
@@ -32,10 +35,6 @@ import org.bukkit.scoreboard.DisplaySlot;
 import org.bukkit.scoreboard.Objective;
 import org.bukkit.scoreboard.Scoreboard;
 
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-
 // Scoreboard Management: https://www.spigotmc.org/wiki/making-scoreboard-with-teams-no-flicker
 
 @RequiredArgsConstructor
@@ -62,7 +61,7 @@ public class ScoreboardManager {
 
     @Getter private Scoreboard board;
     private Objective obj;
-    private Map<Integer, org.bukkit.scoreboard.Team> teams = new HashMap<>();
+    private final Map<Integer, org.bukkit.scoreboard.Team> teams = new HashMap<>();
     private static final String[] COLOR_CODES = {"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f"};
 
     /**

missilewars-plugin/src/main/java/de/butzlabben/missilewars/util/geometry/GameArea.java

@@ -27,7 +27,7 @@ import org.bukkit.World;
 @Getter
 public class GameArea {
 
-    private World world;
+    private final World world;
     @Setter private Location position1, position2;
 
     private int minX, minY, minZ;