Replace one mob with another?

Let's say that on the EntityPrimedEvent, I wanted to replace a creeper with a chicken.

How would I go about this? I seem a bit confused.

 

I think best is to use onCreatureSpawn event, spawn a chicken at the location of the creeper and after that just cancel the event. Correct me if i'm wrong!

 

Well I was thinking something more along the lines of "Creeper is about to blow!!!" And right as it blows up, instead of doing world damage, a chicken spawns. For humor. :}

E: Plus, I don't even know how to spawn an entity, much less spawn one at the location of another.

 

Good idea, but that would be on explode event or so, also, it will still damage players somehow even if you cancel the event.. But that's a really creative idea.

 

Hence "ExplosionPrimedEvent" I'm already killing off creepers when that event fires, and that not only prevents them from "exploding" put it prevents players from getting damaged.

Code:

  public void onExplosionPrimed(ExplosionPrimedEvent event)
       {
               if (event.getEntity() != null)
               {
                   if (event.getEntity() instanceof Creeper)
                   {
                       event.getEntity().remove();
                       event.setCancelled(true);
                       return;
                   }

                   if (event.getEntity() instanceof Fireball)
                   {
                       event.getEntity().remove();
                       event.setCancelled(true);
                       return;
                   }

               }
               return;
       }

I just wanna know how I could replace the entity with a chicken after I remove it.

 

Code:

theWorld.spawnCreature(event.getEntity().getLocation(),CreatureType.CHICKEN)

 

Thank you so much. I got it working! <3