Fix bugs in map keys and groups. Fix code smells.

src/main/java/world/bentobox/limits/Limits.java

@@ -27,6 +27,7 @@ import world.bentobox.limits.objects.IslandBlockCount;
  */
 public class Limits extends Addon {
 
+    private static final String LIMIT_NOT_SET = "Limit not set";
     private Settings settings;
     private List<GameModeAddon> gameModes;
     private BlockLimitsListener blockLimitListener;
@@ -188,14 +189,14 @@ public class Limits extends Addon {
     private String getLimit(@Nullable User user, Material m, GameModeAddon gm) {
         Island is = gm.getIslands().getIsland(gm.getOverWorld(), user);
         if (is == null) {
-            return "Limit not set";
+            return LIMIT_NOT_SET;
         }
         @Nullable IslandBlockCount ibc = getBlockLimitListener().getIsland(is.getUniqueId());
         if (ibc == null) {
-            return "Limit not set";
+            return LIMIT_NOT_SET;
         }
         int limit = ibc.getBlockLimit(m);
-        return limit == -1 ? "Limit not set" : String.valueOf(limit);
+        return limit == -1 ? LIMIT_NOT_SET : String.valueOf(limit);
     }
 
 }

src/main/java/world/bentobox/limits/Settings.java

@@ -119,7 +119,7 @@ public class Settings {
      * @return the group limit definitions
      */
     public List<EntityGroup> getGroupLimitDefinitions() {
-        return groupLimits.values().stream().flatMap(Collection::stream).distinct().collect(Collectors.toList());
+        return groupLimits.values().stream().flatMap(Collection::stream).distinct().toList();
     }
 
     /**

src/main/java/world/bentobox/limits/commands/LimitTab.java

@@ -92,18 +92,20 @@ public class LimitTab implements Tab {
 
     private void addEntityGroupLimits(IslandBlockCount ibc, Island island) {
         // Entity group limits
-        Map<EntityGroup, Integer> groupmap = addon.getSettings().getGroupLimitDefinitions().stream().collect(Collectors.toMap(e -> e, EntityGroup::getLimit));
-        Map<String, EntityGroup> groupbyname = groupmap.keySet().stream().collect(Collectors.toMap(EntityGroup::getName, e -> e));
+        Map<EntityGroup, Integer> groupMap = addon.getSettings().getGroupLimitDefinitions().stream().collect(Collectors.toMap(e -> e, EntityGroup::getLimit));
+        // Group by same loop up map
+        Map<String, EntityGroup> groupByName = groupMap.keySet().stream().collect(Collectors.toMap(EntityGroup::getName, e -> e));
         // Merge in any permission-based limits
         if (ibc == null) {
             return;
         }
         ibc.getEntityGroupLimits().entrySet().stream()
-        .filter(e -> groupbyname.containsKey(e.getKey()))
-        .forEach(e -> groupmap.put(groupbyname.get(e.getKey()), e.getValue()));
-
-        ibc.getEntityGroupLimitsOffset().forEach((key, value) -> groupmap.put(groupbyname.get(key), (groupmap.getOrDefault(key, 0) + value)));
-        groupmap.forEach((v, limit) -> {
+        .filter(e -> groupByName.containsKey(e.getKey()))
+        .forEach(e -> groupMap.put(groupByName.get(e.getKey()), e.getValue()));
+        // Update the group map for each group limit offset. If the value already exists add it
+        ibc.getEntityGroupLimitsOffset().forEach((key, value) ->
+        groupMap.put(groupByName.get(key), (groupMap.getOrDefault(groupByName.get(key), 0) + value)));
+        groupMap.forEach((v, limit) -> {
             PanelItemBuilder pib = new PanelItemBuilder();
             EntityType k = v.getTypes().iterator().next();
             pib.name(v.getName());

src/main/java/world/bentobox/limits/listeners/EntityLimitListener.java

@@ -196,15 +196,16 @@ public class EntityLimitListener implements Listener {
         justSpawned.add(entity.getUniqueId());
         // Check for entities that need cleanup
         switch (reason) {
-            case BUILD_IRONGOLEM -> detectIronGolem(l);
-            case BUILD_SNOWMAN -> detectSnowman(l);
-            case BUILD_WITHER -> {
-                detectWither(l);
-                // Create explosion
-                l.getWorld().createExplosion(l, 7F, true, true, entity);
-            }
-            default -> {
-            }
+        case BUILD_IRONGOLEM -> detectIronGolem(l);
+        case BUILD_SNOWMAN -> detectSnowman(l);
+        case BUILD_WITHER -> {
+            detectWither(l);
+            // Create explosion
+            l.getWorld().createExplosion(l, 7F, true, true, entity);
+        }
+        default -> {
+            // Do nothing
+        }
         }
     }
 

src/main/java/world/bentobox/limits/objects/IslandBlockCount.java

@@ -270,7 +270,7 @@ public class IslandBlockCount implements DataObject {
      * @return limit or -1 for unlimited
      */
     public int getEntityGroupLimit(String name) {
-        return entityGroupLimits.getOrDefault(name, -1) + getEntityLimitsOffset().getOrDefault(name, 0);
+        return entityGroupLimits.getOrDefault(name, -1) + getEntityGroupLimitsOffset().getOrDefault(name, 0);
     }
 
     /**