From f68af5529fc190fd7b1c858a1dd4508be2a9bc2d Mon Sep 17 00:00:00 2001
From: tastybento <tastybento@users.noreply.github.com>
Date: Sun, 2 Jun 2024 18:04:54 -0700
Subject: [PATCH] Remove concurrent hashmap because it cannot handle null
 values.

Need to use another approach if concurrency is required.
---
 .../bentobox/bentobox/managers/island/IslandCache.java    | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/main/java/world/bentobox/bentobox/managers/island/IslandCache.java b/src/main/java/world/bentobox/bentobox/managers/island/IslandCache.java
index 97624b230..ed2ee7183 100644
--- a/src/main/java/world/bentobox/bentobox/managers/island/IslandCache.java
+++ b/src/main/java/world/bentobox/bentobox/managers/island/IslandCache.java
@@ -4,6 +4,7 @@
 import java.util.Collection;
 import java.util.Collections;
 import java.util.Comparator;
+import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Iterator;
 import java.util.List;
@@ -12,7 +13,6 @@
 import java.util.Objects;
 import java.util.Set;
 import java.util.UUID;
-import java.util.concurrent.ConcurrentHashMap;
 import java.util.stream.Collectors;
 
 import org.bukkit.Bukkit;
@@ -51,9 +51,9 @@ public class IslandCache {
     private final @NonNull Database<Island> handler;
 
     public IslandCache(@NonNull Database<Island> handler) {
-        islandsById = new ConcurrentHashMap<>();
-        islandsByUUID = new ConcurrentHashMap<>();
-        grids = new ConcurrentHashMap<>();
+        islandsById = new HashMap<>();
+        islandsByUUID = new HashMap<>();
+        grids = new HashMap<>();
         this.handler = handler;
     }