Solved Can't figure out how to inflict potions effects

Can anyone help me with this code I have been looking around and testing for about 3 days now and cannot figure it out. It would mean so much to me if you could help!

Here is my code:

Code:

package me.RainingTNT123.Ultimates.Events;



import org.bukkit.ChatColor;
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;



public class EventsClass implements Listener {


    @EventHandler
    public void onHit(EntityDamageByEntityEvent event) {
        if(event.getDamager() instanceof Player) {
            Player player = (Player) event.getDamager();
     
        ItemStack hand = player.getInventory().getItemInHand();
        if(hand.getItemMeta().getDisplayName().contains(ChatColor.DARK_PURPLE + "The Withered Sword")){
            player.addPotionEffect(new PotionEffect(PotionEffectType.WITHER, 200, 2));
        }

    }
} 
}

My other class (You may not need this)

Code:

package me.RainingTNT123.Ultimates.items;

import java.util.ArrayList;

import org.bukkit.ChatColor;
import org.bukkit.Material;
import org.bukkit.enchantments.Enchantment;
import org.bukkit.entity.Entity;
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.ItemFlag;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.ShapedRecipe;
import org.bukkit.inventory.meta.ItemMeta;
import org.bukkit.plugin.Plugin;
import org.bukkit.potion.PotionEffect;
import org.bukkit.potion.PotionEffectType;

import me.RainingTNT123.Ultimates.Main;

public class UltimateItems implements Listener{

    private Plugin plugin = Main.getPlugin(Main.class);

   
    @EventHandler
    public void onHit(EntityDamageByEntityEvent event) {
        Entity e = event.getEntity();
        Entity damager = event.getDamager();
       
        if(e instanceof Player) {
            Player player = (Player) e;
            player.addPotionEffect(new PotionEffect(PotionEffectType.WITHER, 100, 1));
                //    if(event.getDamager() instanceof Player) {
        //    Player player = (Player) event.getDamager();
    //        Player damaged = (Player) event.getEntity();
       
           
           
        //ItemStack hand = player.getInventory().getItemInHand();
        //if(hand.getItemMeta().getDisplayName().contains(ChatColor.DARK_PURPLE + "The Withered Sword")){
            // damaged.addPotionEffect(new PotionEffect(PotionEffectType.WITHER, 100, 1));
           
        }
    }
   
    public void customRecipe() {
        ItemStack item = new ItemStack(Material.STONE_SWORD,1);
        ItemMeta meta = item.getItemMeta();
       
            meta.setDisplayName(ChatColor.DARK_PURPLE + "The Withered Sword");
            ArrayList<String> lore = new ArrayList<String>();
            lore.add(ChatColor.GRAY + "This type of sword was used by the withered");
            lore.add(ChatColor.GRAY + "but this is only a replica of the sword.");
            lore.add(ChatColor.GRAY + " ");
            lore.add(ChatColor.BLUE + "Wither II for 3 seconds");
            lore.add(ChatColor.BLUE + "Blindness for 3 seconds");
            lore.add(ChatColor.BLUE + "+12 Attack Damage");
            lore.add(ChatColor.DARK_GRAY + ChatColor.ITALIC.toString() + "Ultimate item");
            meta.setLore(lore);
            meta.addEnchant(Enchantment.DURABILITY, 10000, true);
            meta.addItemFlags(ItemFlag.HIDE_ATTRIBUTES);
            meta.addItemFlags(ItemFlag.HIDE_ENCHANTS);
            item.setItemMeta(meta);
           
        ShapedRecipe witheredsword =new ShapedRecipe(item);
       
        witheredsword.shape("%^%","%#%","%^%");
        witheredsword.setIngredient('#', Material.DIAMOND_SWORD);
        witheredsword.setIngredient('%', Material.SKULL_ITEM, 1);
        witheredsword.setIngredient('^', Material.NETHER_STAR);
       
        plugin.getServer().addRecipe(witheredsword);
       
    }
}

 

@RainingTNT123 Listen to the EntityDamageByEntityEvent, then check if the damager's hand contains the specified item, then you can give the victim the effect using the LivingEntity#addPotionEffect(PotionEffect) method.

 

Welp I just needed to change Player to Living Entity...
We'll that was easy.

Thanks for the help @KarimAKL