Get name of an player that killed certain mob

Hello,
I'm making a plugin for an event on my server and I need to get name of a player that killed ender dragon. Any ideas?

 

1. EntityDeathEvent
2. Check if Entity instaceof EnderDragon
3. Check if killer instanceof Player
4. Player killer = (Player) event.getEntity().getKiller();
5. killer.getName() <---- that is the name of the player who killed the dragon.

Untested but that is how I would do it.

 

@HCMatt A little fix is needed but, otherwise that's correct.

LivingEntity#getKiller() returns Player, so there's no need to check for that.

There's also no need to cast it to Player.

You need to do a null check before this, since getKiller() returns Player, it'll be null if the killer wasn't a player.

Also, getKiller() will return null if you were indirectly killed by a player, i.e. an arrow from a player or something like that.
Since you're talking about killing an EnderDragon, i think you want that as well.
Here's how you do it:
1. Listen to the EntityDeathEvent.
2. Check if getEntity() is an instanceof EnderDragon.
3. Get the last EntityDamageEvent thrown from the EnderDragon by using Entity#getLastDamageCause().
4. Check if the EntityDamageEvent is an instanceof EntityDamageByEntityEvent, if so, cast it to that.
5. Check if EntityDamageByEntityEvent#getDamager() instanceof Player, if so, that's your player, otherwise, check if it's an instanceof Projectile, and if so, check if Projectile#getShooter() is an instanceof Player, if so, you've got your player.
6. Then you just use Player#getName() to get their name.