SpawningBow - spigot 1.11.2

Main.java

package tutorial.spigot.plugins;

import org.bukkit.plugin.java.JavaPlugin;

public class Main extends JavaPlugin{

	@Override
	public void onEnable() {
		getLogger().info("Dr Ewe's plugin is enabled");
		getServer().getPluginManager().registerEvents(new SpawningBow(), this);
	}
	
	@Override
	public void onDisable() {
		getLogger().info("Dr Ewe's plugin is disabled");
	}
	
}

SpawningBow.java

package tutorial.spigot.plugins;
 
import org.bukkit.Material;
import org.bukkit.enchantments.Enchantment;
import org.bukkit.entity.Arrow;
import org.bukkit.entity.Entity;
import org.bukkit.entity.Player;
import org.bukkit.entity.Projectile;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.entity.ProjectileLaunchEvent;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.meta.SpawnEggMeta;
 
public class SpawningBow implements Listener {
 
    @EventHandler
    public void spawningArrows(ProjectileLaunchEvent event){
        Projectile projectile = event.getEntity();
        Player player = (Player) projectile.getShooter();
       
        if(!(projectile instanceof Arrow
                && projectile.getShooter() instanceof Player
                && player.getInventory().getItemInMainHand().getType() == Material.BOW
                && player.getInventory().getItemInOffHand().getType() == Material.MONSTER_EGG )) {     
            return;
        }
       
        ItemStack bow = player.getInventory().getItemInMainHand();
        ItemStack offHand = player.getInventory().getItemInOffHand();
        SpawnEggMeta sem = (SpawnEggMeta) offHand.getItemMeta();
       
        Entity ent = player.getWorld().spawn(player.getLocation(), sem.getSpawnedType().getEntityClass() );
        ent.setVelocity(projectile.getVelocity());
       
        event.setCancelled(true);
       
        if (bow.getEnchantments().containsKey(Enchantment.ARROW_DAMAGE)) {
            ent.setVelocity(ent.getVelocity().multiply(bow.getEnchantmentLevel(Enchantment.ARROW_DAMAGE) + 1));
        }
       
        if (bow.getEnchantments().containsKey(Enchantment.ARROW_FIRE)) {
            ent.setFireTicks(bow.getEnchantmentLevel(Enchantment.ARROW_FIRE) * 100);
        }
       
    }
}