Code for Surfaace

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Random;

import org.bukkit.Bukkit;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.inventory.ItemStack;
import org.bukkit.plugin.java.JavaPlugin;


public class main extends JavaPlugin{

	public String prefix = "§2[Lottery] §7";

	List<Player> list = new ArrayList<Player>();

	public boolean canplay = true;

	int time= 10;
	int countdown;

	@Override
	public void onEnable(){
	        System.out.println("[Lottery] ist an");
	}
	@Override
	public void onDisable(){
	        System.out.println("[Lottery] ist aus");


	}

	@SuppressWarnings("deprecation")
	public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args){

		if(!(sender instanceof Player)){
			sender.sendMessage(this.prefix + "Du musst ein Spieler sein");
			return true;
		}

	    final Player p =(Player) sender;

	    if(cmd.getName().equalsIgnoreCase("lottery")){

	    	if(!p.hasPermission("system.lottery")){
	            p.sendMessage("§2Du hast keine Rechte" + cmd.getName());
	    		return true;
	    	}

	        if(!(args.length == 2)){
	    		return false;
	        }

	        if(canplay == false){
	            p.sendMessage("§2du hast bereits lottery spiel gestartet");
	            p.sendMessage("§2/lottery <ID> <Anzahl>");
	            canplay = false;
	        	return true;
	        }

	        final int id = new Integer(args[0]);
	        final int anzahl = new Integer(args[1]);

	        Bukkit.getServer().broadcastMessage(this.prefix + "Lottery wird gespielt");

	        Bukkit.getScheduler().scheduleSyncDelayedTask(this, new Runnable() {
	        	private ArrayList<Player> players = new ArrayList<Player>();
	        	@Override
	        	public void run() {
		        	Collection<? extends Player> p = Bukkit.getServer().getOnlinePlayers();
			        for(Player a : p){
			        	players.add(a);
			        }
	        		Random random = new Random();
	        		Player player = null;
	        		player = (Player) players.get(random.nextInt(players.size()));

	        		Bukkit.getServer().broadcastMessage("[lottery der spieler" + player.getName() + "hat gewonnen");
	        		Player tplayer = player;
	        		tplayer.sendMessage("&2[Lottery] du hast das lottery spiel gewonnen");
	        		tplayer.getInventory().addItem(new ItemStack(id, anzahl));
	        	}
	        }, 60L);

	        countdown = Bukkit.getScheduler().scheduleAsyncRepeatingTask(this, new Runnable() {
	        	@Override
	        	public void run() {
	        		if(time != 0){
	        			time--;
	        		}else{
	        			canplay = true;
	        			Bukkit.getScheduler().cancelTask(countdown);
	        		}
	        	}
	        }, 20L, 20L);
	    }
	    return true;
	}

}