Solved Is this the best way of doing adding damage?

I was wondering if there was a better way of dealing damage because when I put this on a weapon it makes it do a lot of damage but it's not doing it directly either.
So if there is a better way of changing the damage of an item that would be great!
By the way I'm using bukkit 1.8
Thanks!

What I'm using
damaged.damage(8);

My Code

Code:

package me.RainingTNT123.Ultimates.Events;



import java.util.UUID;

import org.bukkit.ChatColor;
import org.bukkit.entity.LivingEntity;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.entity.EntityDamageByEntityEvent;
import org.bukkit.inventory.ItemStack;
import org.bukkit.potion.PotionEffect;
import org.bukkit.potion.PotionEffectType;

import me.RainingTNT123.Ultimates.Main;



public class EventsClass implements Listener {

    private Main plugin = Main.getPlugin(Main.class);
  
  
    @EventHandler
    public void onHit(EntityDamageByEntityEvent event) {
        if(event.getDamager() instanceof Player) {
            Player player = (Player) event.getDamager();
            LivingEntity damaged = (LivingEntity) event.getEntity();
      
          
          
            ItemStack hand = player.getInventory().getItemInHand();
        if(hand.getItemMeta().getDisplayName().contains(ChatColor.DARK_PURPLE + "The Withered Sword")){
            damaged.addPotionEffect(new PotionEffect(PotionEffectType.WITHER, 60, 2));
            damaged.addPotionEffect(new PotionEffect(PotionEffectType.BLINDNESS, 60, 2));
            damaged.damage(8);

        }
        }
    }
        @EventHandler
        public void onHit2(EntityDamageByEntityEvent event) {
            if(event.getDamager() instanceof Player) {
                Player player = (Player) event.getDamager();
                LivingEntity damaged = (LivingEntity) event.getEntity();
                UUID uuid = player.getUniqueId();
              
        ItemStack hand2 = player.getInventory().getItemInHand();
        if(hand2.getItemMeta().getDisplayName().contains(ChatColor.DARK_AQUA + "The Hammer of The Storms")){
            damaged.damage(7);
            if(!plugin.cdtime.containsKey(uuid)) {
              
            damaged.getWorld().strikeLightning(event.getEntity().getLocation());
            plugin.cdtime.put(uuid, plugin.smitecd);
            player.sendMessage(ChatColor.GREEN + "You used the" + ChatColor.GOLD + ChatColor.BOLD + " Smite" +  ChatColor.GREEN + " Ability!");
            }
            }else {
                event.setCancelled(true);
                if(hand2.getItemMeta().getDisplayName().contains(ChatColor.DARK_AQUA + "The Hammer of The Storms")){
                player.sendMessage(ChatColor.RED + "You are on cooldown currently with" + ChatColor.GOLD + plugin.cdtime.get(uuid) + ChatColor.RED + " seconds");
        }
            }}}
        @EventHandler
        public void onHit3(EntityDamageByEntityEvent event) {
            if(event.getDamager() instanceof Player) {
                Player player = (Player) event.getDamager();
                LivingEntity damaged = (LivingEntity) event.getEntity();
                UUID uuid = player.getUniqueId();
        ItemStack hand3 = player.getInventory().getItemInHand();
        if(hand3.getItemMeta().getDisplayName().contains(ChatColor.DARK_PURPLE + "Sword of Harming")){
            damaged.damage(2);
            if(!plugin.cdtime.containsKey(uuid)) {
              
          
            damaged.addPotionEffect(new PotionEffect(PotionEffectType.HARM, 1, 2));
            plugin.cdtime.put(uuid, plugin.harmcd);
            player.sendMessage(ChatColor.GREEN + "You used the" + ChatColor.GOLD + ChatColor.BOLD + " Harming" +  ChatColor.GREEN + " Ability!");
            }
        }else{
            event.setCancelled(true);
            if(hand3.getItemMeta().getDisplayName().contains(ChatColor.DARK_PURPLE + "Sword of Harming")){
            player.sendMessage(ChatColor.RED + "You are on cooldown currently with" + ChatColor.GOLD + plugin.cdtime.get(uuid) + ChatColor.RED + " seconds");
        }
        }
        }}}
      

 

@RainingTNT123 I might be mistaken but, i think the damage taken from Damageable#damage(double) still gets reduced from armor, resistance, etc.

 

Armor does work but it does do a little more than sharpness.
Thanks for the help!