Solved Need help with GUI

Well I was watching a video, it was a tutorial on how to make a GUI, I copied the code to make changes and see how it works (I typed it from the video). But it doesn't work, can someone tell me where I messed up?

Code:java

package GUI;
 
import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.Material;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.block.Action;
import org.bukkit.event.inventory.InventoryClickEvent;
import org.bukkit.event.player.PlayerInteractEvent;
import org.bukkit.event.player.PlayerJoinEvent;
import org.bukkit.inventory.Inventory;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.meta.ItemMeta;
import org.bukkit.plugin.java.JavaPlugin;
 
public class main extends JavaPlugin implements Listener{
 
    public void onEnable() {
        getLogger().info("[Wardrobe] has just been enabled. Running version 1.0");
    }
 
    public void onDisable() {
        getLogger().info("[Wardrobe] has just been disabled. Running version 1.0");
    }
 
    private void openGUI(Player player) {
        Inventory inv = Bukkit.createInventory(null, 9, ChatColor.DARK_GREEN
                + "Server Selector");
        ItemStack survival = new ItemStack(Material.DIAMOND_CHESTPLATE);
        ItemMeta survivalMeta = survival.getItemMeta();
        ItemStack creative = new ItemStack(Material.GRASS);
        ItemMeta creativeMeta = creative.getItemMeta();
 
        survivalMeta.setDisplayName(ChatColor.DARK_RED + "survival");
        survival.setItemMeta(survivalMeta);
 
        creativeMeta.setDisplayName(ChatColor.GREEN + "Creative");
        creative.setItemMeta(creativeMeta);
 
        inv.setItem(3, survival);
        inv.setItem(5, creative);
 
        player.openInventory(inv);
    }
 
    @EventHandler
 
    public void onInventoryClick(InventoryClickEvent event) {
        if(!ChatColor.stripColor(event.getInventory().getName()).equalsIgnoreCase("Server Selector"))
            return;
        Player player = (Player) event.getWhoClicked();
        event.setCancelled(true);
 
        if(event.getCurrentItem()==null || event.getCurrentItem().getType()==Material.AIR || event.getCurrentItem().hasItemMeta())
            player.closeInventory();
        return;
    }
 
    switch(event.getCurrentItem().getType()) {
    case DIAMOND_CHESTPLATE:
        teleportInWorld(player, 0, 50, 0);
        player.sendMessage(String.format("%sTeleported To %sSurvival%s!", ChatColor.GOLD, ChatColor.DARK_RED, ChatColor.GOLD));
        break;
    case GRASS:
        teleportInWorld(player, 20, 50, 20);
        player.sendMessage(String.format("%sTeleported To %sCreative%s!", ChatColor.GOLD, ChatColor.GREEN, ChatColor.GOLD));
        break;
    default:
        player.closeInventory();
        break;
    }
 
    @EventHandler
 
    public void onPlayerJoin(PlayerJoinEvent event) {
        event.getPlayer().getInventory().addItem(new ItemStack(Material.COMPASS));
    }
 
    public void onPlayerInteract(PlayerInteractEvent event) {
        Action a = event.getAction();
        ItemStack is = event.getItem();
 
        if (a== Action.PHYSICAL || is ==null || is.getType() == Material.AIR)
            return;
    }
 
}

 

What doesn't work?

 

Nothing works, the plugin doesn't even work and has some error. I'll try to work it out after I have lunch, but I want to see what you guys think.

 

kekistar Post the stacktrace

kekistar You need to register the events also the last event doesn't have the @EventHandler

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

Solved,thanks everyone.