MenuInv.java

package me.pogostick29.menuinv;

import org.bukkit.Bukkit;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.block.Action;
import org.bukkit.event.player.PlayerInteractEvent;
import org.bukkit.plugin.java.JavaPlugin;

public class MenuInv extends JavaPlugin implements Listener {

    private Menu menu;

    public void onEnable() {
        menu = new Menu(this);
        Bukkit.getServer().getPluginManager().registerEvents(this, this);
    }

    @EventHandler
    public void onPlayerInteract(PlayerInteractEvent e) {
        if (!(e.getAction() == Action.RIGHT_CLICK_BLOCK)) return;
        menu.show(e.getPlayer());
    }
}