Java Wands

package me.Captain_Dory.Wands;

import java.util.HashMap;

import org.bukkit.Effect;
import org.bukkit.Location;
import org.bukkit.Material;
import org.bukkit.craftbukkit.v1_6_R3.entity.CraftPlayer;
import org.bukkit.craftbukkit.v1_6_R3.entity.CraftSnowball;
import org.bukkit.entity.Entity;
import org.bukkit.entity.Player;
import org.bukkit.entity.Snowball;
import org.bukkit.event.EventHandler;
import org.bukkit.event.entity.EntityDamageByEntityEvent;
import org.bukkit.event.player.PlayerInteractEvent;
import org.bukkit.plugin.java.JavaPlugin;
import org.bukkit.util.BlockIterator;

public class Main extends JavaPlugin{
   public void onEnable() {
       getLogger().info("wow much enable :^]");
   }

   public void onDisable() {
       getLogger().info("wow many disable doge sad :c");
   }

   @EventHandler
   public void eva (PlayerInteractEvent e) {
       Location location = player.getEyeLocation();
       BlockIterator blocksToAdd = new BlockIterator(location, 0D, 15);
       Location blockToAdd;
       while(blocksToAdd.hasNext()) {
               if (blockToAdd.getBlock().getType() != Material.AIR ||!shotprojectiledata.containsKey(projectile)) {
                       break;
               }
               blockToAdd = blocksToAdd.next().getLocation();
               player.getWorld().playEffect(blockToAdd, Effect.STEP_SOUND, Material.FIRE);
       }
       Snowball projectile = player.launchProjectile(Snowball.class);
       EntityData data = new EntityData(projectile.getLocation(), 15, 5D);
       shotprojectiledata.put(projectile, data);
       for (Player p : Bukkit.getOnlinePlayers()) {
           ((CraftPlayer)p).getHandle().playerConnection.sendPacket(new  PacketPlayOutEntityDestroy(((CraftSnowball) projectile).getHandle().getId()));
       public class EntityData {
       private Location firedfrom;
       private Integer range;
       private Double damage;
        public EntityData(Location loc, Integer range, Double damage) {
           this.firedfrom = loc;
           this.range = range;
           this.damage = damage;
       }
       public Location getFiredFrom() {
           return firedfrom;
       }
       public Integer getRange() {
           return range;
       }
       public Double getDamage() {
           return damage;
       }
   }

   //put where ever you want again
   public final static HashMap<Entity, EntityData> shotprojectiledata = new HashMap<Entity, EntityData>();


   @EventHandler
   public void onHit(EntityDamageByEntityEvent event) {
       if (event.getDamager() instanceof Snowball) {
           if (shotprojectiledata.containsKey(event.getDamager())) {
               EntityData eventdata = shotprojectiledata.get(event.getDamager());
               if (event.getEntity().getLocation().distance(eventdata.getFiredFrom())<=eventdata.getRange()) {
                   event.setDamage(eventdata.getDamage());
                   shotprojectiledata.remove(event.getDamager());
               }
           }
       }
   }
   }

   }