Item stack attack damage?

hey guys i was wondering about setting damage to item stack can someone helps me
this is my code

Code:

f (label.equalsIgnoreCase("test"))
           
            player.addPotionEffect(new PotionEffect(PotionEffectType.JUMP, 2147483647, 2));
            player.addPotionEffect(new PotionEffect(PotionEffectType.SPEED, 2147483647, 1));
            player.sendMessage(ChatColor.GRAY + "[" + ChatColor.GREEN + "Weapon" + ChatColor.GRAY + "] " + ChatColor.GRAY + "You have received a test weapon!");
            ItemStack jumper = new ItemStack(Material.IRON_AXE);
            ItemMeta jumpermeta = jumper.getItemMeta();
            jumpermeta.setDisplayName(ChatColor.RED + "Logist");
            jumper.setItemMeta(jumpermeta);
            player.getInventory().addItem(new ItemStack[] { jumper });

 

If you mean the actual damage a weapon/item does then there is no specific way you can do this easily. You will need to modify its attribute, which based on your question (and example above) is probably a little more intense that you can handle.

However, I am actually creating a small library to do this for developers quite easily which I will be posting to Bukkit in the next couple days. My LIB works on any version MC as well.

 

post it here when it will done