public class Events implements Listener {
	private int cooldowntime = 5;
	private HashMap<UUID, Long> cooldown = new HashMap<UUID, Long>();

	@EventHandler
	public void onPlayerInteract(PlayerInteractEvent event) {
		final Player player = event.getPlayer();
		Action action = event.getAction();
		Block block = event.getClickedBlock();
		if (player.getItemInHand().getType() == Material.DIAMOND_PICKAXE) {
			if (event.getAction() == Action.RIGHT_CLICK_AIR) {
				player.performCommand("sellall");
			}
			{

				long secondsleft = ((cooldown.get(player.getUniqueId()) / 1000) + cooldowntime)
						- (System.currentTimeMillis() / 1000);
				if (secondsleft > 0) {
					player.sendMessage(
							ChatColor.RED + "You must wait" + ChatColor.YELLOW + secondsleft + ChatColor.RED + "seconds!");

				}
				event.setCancelled(true);


				player.sendMessage(ChatColor.RED + "You need to wait 3 seconds!");
			}
		}
	}
}