Solved Countdown in menu, error

In a menu it will teleport a player to a location that are in the config, but when I add a BukkitRunnable so it will countdown and teleport after 5 seconds. But it give me a error when I click on the menu.

Code:

Code:

package me.shadow5353.fasttravel;
 
import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.DyeColor;
import org.bukkit.GameMode;
import org.bukkit.Location;
import org.bukkit.World;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.inventory.InventoryClickEvent;
import org.bukkit.inventory.Inventory;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.meta.ItemMeta;
import org.bukkit.material.Wool;
import org.bukkit.scheduler.BukkitRunnable;
 
public class Menu implements Listener {
 
        private static Inventory inv;
        private ItemStack c, s, a;
        private FastTravel plugin;
        SettingsManager settings = SettingsManager.getInstance();
        MessageManager msg = MessageManager.getInstance();
     
        public Menu() {
                inv = Bukkit.getServer().createInventory(null, 9, "Fast Travel");
             
                c = createItem(DyeColor.GREEN, ChatColor.GREEN + "City");
                s = createItem(DyeColor.YELLOW, ChatColor.YELLOW + "Town Harbor");
                a = createItem(DyeColor.RED, ChatColor.RED + "Town");
             
                inv.setItem(1, c);
                inv.setItem(4, s);
                inv.setItem(7, a);
        }
     
        private ItemStack createItem(DyeColor dc, String name) {
                ItemStack i = new Wool(dc).toItemStack(1);
                ItemMeta im = i.getItemMeta();
                im.setDisplayName(name);
                i.setItemMeta(im);
                return i;
        }
     
        public static void show(Player p) {
                p.openInventory(inv);
        }
     
        @EventHandler
        public void onInventoryClick(InventoryClickEvent e) {
            final Player p = (Player) e.getWhoClicked();
            if (!e.getInventory().getName().equalsIgnoreCase(inv.getName())) return;
            if (e.getCurrentItem().getItemMeta() == null) return;
            if (e.getCurrentItem().getItemMeta().getDisplayName().contains("City")) {
                e.setCancelled(true);
                if(settings.getData().getString("locations.city.enable") == null){
                    msg.info(p, "This Fast Travel have been disabled!");
                    return;
                }
                msg.info(p, "You will get teleported in 5 seconds!");
                new BukkitRunnable(){
                    private int countdown = 5;
                    @Override
                    public void run(){
                        countdown--;
                        if(countdown == 4){
                            msg.info(p, "4..");
                            }
                        if(countdown == 3){
                            msg.info(p, "3..");
                            }
                        if(countdown == 2){
                            msg.info(p, "2..");
                            }
                        if(countdown == 1){
                            msg.info(p, "1..");
                            }       
                        if(countdown == 0){
                            cancel();
                            World world = Bukkit.getServer().getWorld(settings.getData().getString("locations.city.world"));
                            int x = settings.getData().getInt("locations.city.x");
                            int y = settings.getData().getInt("locations.city.y");
                            int z = settings.getData().getInt("locations.city.z");
                            int yaw = settings.getData().getInt("locations.city.yaw");
                            int pitch = settings.getData().getInt("locations.city.pitch");
                            Location loc = new Location(world, x, y, z, yaw, pitch);
                            p.teleport(loc);
                            p.closeInventory();
                            msg.good(p, "You have been teleported to City!");
                            }
                        }
                    }.runTaskTimer(plugin, 0L, 20L);
                }
                if (e.getCurrentItem().getItemMeta().getDisplayName().contains("Town Harbor")) {
                        e.setCancelled(true);
                        e.getWhoClicked().setGameMode(GameMode.SURVIVAL);
                        e.getWhoClicked().closeInventory();
                }
                if (e.getCurrentItem().getItemMeta().getDisplayName().contains("Town")) {
                        e.setCancelled(true);
                        e.getWhoClicked().setGameMode(GameMode.ADVENTURE);
                        e.getWhoClicked().closeInventory();
                }
        }
}

Error:

Code:

[11:06:13] [Server thread/ERROR]: Could not pass event InventoryClickEvent to FastTravel v1.0
org.bukkit.event.EventException
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:294) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-59-g6efeddf-b3074jnks]
    at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-59-g6efeddf-b3074jnks]
    at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:501) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-59-g6efeddf-b3074jnks]
    at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:486) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-59-g6efeddf-b3074jnks]
    at net.minecraft.server.v1_7_R3.PlayerConnection.a(PlayerConnection.java:1363) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-59-g6efeddf-b3074jnks]
    at net.minecraft.server.v1_7_R3.PacketPlayInWindowClick.a(SourceFile:32) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-59-g6efeddf-b3074jnks]
    at net.minecraft.server.v1_7_R3.PacketPlayInWindowClick.handle(SourceFile:10) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-59-g6efeddf-b3074jnks]
    at net.minecraft.server.v1_7_R3.NetworkManager.a(NetworkManager.java:157) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-59-g6efeddf-b3074jnks]
    at net.minecraft.server.v1_7_R3.ServerConnection.c(SourceFile:134) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-59-g6efeddf-b3074jnks]
    at net.minecraft.server.v1_7_R3.MinecraftServer.v(MinecraftServer.java:667) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-59-g6efeddf-b3074jnks]
    at net.minecraft.server.v1_7_R3.DedicatedServer.v(DedicatedServer.java:260) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-59-g6efeddf-b3074jnks]
    at net.minecraft.server.v1_7_R3.MinecraftServer.u(MinecraftServer.java:558) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-59-g6efeddf-b3074jnks]
    at net.minecraft.server.v1_7_R3.MinecraftServer.run(MinecraftServer.java:469) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-59-g6efeddf-b3074jnks]
    at net.minecraft.server.v1_7_R3.ThreadServerApplication.run(SourceFile:628) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-59-g6efeddf-b3074jnks]
Caused by: java.lang.IllegalArgumentException: Plugin cannot be null
    at org.apache.commons.lang.Validate.notNull(Validate.java:203) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-59-g6efeddf-b3074jnks]
    at org.bukkit.craftbukkit.v1_7_R3.scheduler.CraftScheduler.validate(CraftScheduler.java:391) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-59-g6efeddf-b3074jnks]
    at org.bukkit.craftbukkit.v1_7_R3.scheduler.CraftScheduler.runTaskTimer(CraftScheduler.java:120) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-59-g6efeddf-b3074jnks]
    at org.bukkit.scheduler.BukkitRunnable.runTaskTimer(BukkitRunnable.java:100) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-59-g6efeddf-b3074jnks]
    at me.shadow5353.fasttravel.Menu.onInventoryClick(Menu.java:94) ~[?:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_60]
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_60]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_60]
    at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.7.0_60]
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:292) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-59-g6efeddf-b3074jnks]
    ... 13 more

 

shadow5353 Plugin is null, you havent set it in the constructor

 

shadow5353 Caused by: java.lang.IllegalArgumentException: Plugin cannot be null

 

AdamQpzm NoLiver92 Thanks for pointing it out that it was in null, did not see it when I looked on the error.

 

PogoStick29 give to you a hug!just kidding but it is true