refactor: code clean up

Author: HappyAreaBean

src/main/java/cc/happyareabean/sjm/commands/SJMCommand.java

@@ -9,6 +9,7 @@
 import net.kyori.adventure.text.event.ClickEvent;
 import net.kyori.adventure.text.format.NamedTextColor;
 import net.kyori.adventure.text.format.TextDecoration;
+import org.bukkit.permissions.PermissionDefault;
 import revxrsal.commands.annotation.Command;
 import revxrsal.commands.annotation.Default;
 import revxrsal.commands.annotation.DefaultFor;
@@ -36,7 +37,7 @@
 @CommandPermission("sjm.admin")
 public class SJMCommand {
 
-	@DefaultFor({"simplejoinmessage", "sjm"})
+	@DefaultFor({"~"})
 	@Description("SimpleJoinMessage commands list")
 	public void help(BukkitCommandActor actor, CommandHelp<String> helpEntries, @Default("1") int page) {
 		List<Component> list = new ArrayList<>();

src/main/java/cc/happyareabean/sjm/utils/MessageUtil.java

@@ -24,7 +24,7 @@ public static void sendMessageDelay(Player player, final List<String> messages,
 		SJMConfig config = SimpleJoinMessage.getInstance().getSJMConfig();
 		DateTimeFormatter formatter =
 				DateTimeFormatter.ofPattern(config.getTimeFormat())
-						.withZone( ZoneId.systemDefault() );
+						.withZone(ZoneId.systemDefault());
 		new BukkitRunnable() {
 			@Override
 			public void run() {
@@ -34,6 +34,6 @@ public void run() {
 						.replace("{time}", formatter.format(Instant.now()))));
 				aPlayer.sendMessage(SimpleJoinMessage.MINIMESSAGE.deserialize(String.join("\n", (SimpleJoinMessage.getInstance().isPAPISupported() ? PlaceholderAPI.setPlaceholders(player, newMessage) : newMessage))));
 			}
-		}.runTaskLater(SimpleJoinMessage.getInstance(), (delayTicks > 0 ? delayTicks : 1L));
+		}.runTaskLaterAsynchronously(SimpleJoinMessage.getInstance(), (delayTicks > 0 ? delayTicks : 1L));
 	}
 }