Solved resetting item lore

I wanna edit new item lore from original item lore.This coding changes "★☆☆☆☆☆☆☆" when you right click on an item with the lore "☆☆☆☆☆☆☆☆". but is not.

Code:

@EventHandler
public void WE(PlayerInteractEvent event)
{
    Player p = event.getPlayer();
    Random r = new Random();
    ItemStack item = p.getItemInHand();
    if (item == null || !item.hasItemMeta() || !item.getItemMeta().hasLore())  return;
    List<String> elore;
    for (String lore : item.getItemMeta().getLore())
      {
        if(event.getAction().equals(Action.RIGHT_CLICK_AIR) || event.getAction().equals(Action.RIGHT_CLICK_BLOCK))
{
            if(lore.matches("§f☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆"))
        {
                switch(r.nextInt(1))
             {
                    case 0:
                    elore = item.getItemMeta().getLore();
                    elore.add("★☆☆☆☆☆☆☆");
                    item.getItemMeta().setLore(elore);
                    item.setItemMeta(item.getItemMeta());
}
}
}

  }
}

 

@timtower What exactly does it mean to get the itemmeta and modify it?

 

@timtower Sorry, I don't understand. I'm only two weeks from starting plugin development so I don't know.
item.getItemMeta().setLore(Arrays.asList("§f★ ☆ ☆ ☆ ☆ ☆ ☆ ☆")); right?

 

@timtower oh, I did. Thank you !