memory optimization with command help

src/main/java/net/nuggetmc/ai/bot/BotManager.java

@@ -44,5 +44,4 @@ public class BotManager implements Listener {
             bot.render(connection, true);
         }
     }
-
 }

src/main/java/net/nuggetmc/ai/commands/CommandHandler.java

@@ -8,28 +8,44 @@ import net.nuggetmc.ai.commands.commands.PlayerAICommand;
 import org.bukkit.ChatColor;
 
 import java.lang.reflect.Method;
-import java.util.Arrays;
-import java.util.List;
-import java.util.Map;
+import java.util.*;
 import java.util.stream.Collectors;
 
 public class CommandHandler {
 
     private final DrinkCommandService drink;
+    private final Map<Class<? extends CommandInstance>, List<String>> help;
 
     public CommandHandler(PlayerAI plugin) {
         drink = (DrinkCommandService) Drink.get(plugin);
         drink.register(new PlayerAICommand(this), "bot", "playerai", "pai", "ai", "npc");
         drink.registerCommands();
+
+        help = new HashMap<>();
+
+        setHelps(new Class[] {
+                PlayerAICommand.class
+        });
     }
 
-    public List<String> getUsage(Class<? extends CommandInstance> clazz) {
+    private void setHelps(Class<? extends CommandInstance>[] cls) {
+        for (Class<? extends CommandInstance> clazz : cls) {
+            help.put(clazz, getUsage(clazz));
+        }
+    }
+
+    public List<String> getHelp(Class<? extends CommandInstance> clazz) {
+        return help.get(clazz);
+    }
+
+    private List<String> getUsage(Class<? extends CommandInstance> clazz) {
         String rootName = getRootName(clazz);
+
         return getSubCommands(clazz).stream().map(c -> {
             Command command = c.getAnnotation(Command.class);
             return ChatColor.GRAY + " ▪ " + ChatColor.YELLOW + "/" + rootName + " " + command.name() + ChatColor.GRAY + " ▪ "
                     + ChatColor.RESET + command.desc();
-        }).collect(Collectors.toList());
+        }).sorted().collect(Collectors.toList());
     }
 
     private String getRootName(Class<? extends CommandInstance> clazz) {

src/main/java/net/nuggetmc/ai/commands/commands/PlayerAICommand.java

@@ -5,10 +5,10 @@ import com.jonahseguin.drink.annotation.OptArg;
 import com.jonahseguin.drink.annotation.Require;
 import com.jonahseguin.drink.annotation.Sender;
 import net.nuggetmc.ai.PlayerAI;
-import net.nuggetmc.ai.commands.CommandHandler;
-import net.nuggetmc.ai.commands.CommandInstance;
 import net.nuggetmc.ai.bot.Bot;
 import net.nuggetmc.ai.bot.BotManager;
+import net.nuggetmc.ai.commands.CommandHandler;
+import net.nuggetmc.ai.commands.CommandInstance;
 import net.nuggetmc.ai.utils.ChatUtils;
 import org.bukkit.ChatColor;
 import org.bukkit.entity.Player;
@@ -28,8 +28,8 @@ public class PlayerAICommand extends CommandInstance {
         sender.sendMessage(ChatUtils.LINE);
         sender.sendMessage(ChatColor.GOLD + "PlayerAI" + ChatColor.GRAY + " [" + ChatColor.RED + "v" + PlayerAI.VERSION + ChatColor.GRAY + "]");
 
-        for (String s : this.getCommandHandler().getUsage(PlayerAICommand.class)) {
-            sender.sendMessage(s);
+        for (String line : getCommandHandler().getHelp(getClass())) {
+            sender.sendMessage(line);
         }
 
         sender.sendMessage(ChatUtils.LINE);
@@ -65,5 +65,4 @@ public class PlayerAICommand extends CommandInstance {
         String formatted = NumberFormat.getNumberInstance(Locale.US).format(size);
         sender.sendMessage("Removed " + ChatColor.RED + formatted + ChatColor.RESET + " entit" + (size == 1 ? "y" : "ies") + ".");
     }
-
 }