Summoning mobs on schedual

Hi,
I am trying to use a scheduler to summon a custom mob into the world at a hard coded co-ordinate. The problem is I cannot locate the overworld world in order to spawn the mob. This is what I've tried previously:

Location loc = new Location(Bukkit.getServer().getWorld("world"),0,0,0);
EntityZombie zom = new EntityZombie((World) Bukkit.getServer().getWorld("world"));
zom.setLocation(0, 0, 0, 0, 0);
World w = (World) Bukkit.getServer().getWorld("world");
w.addEntity(zom);

Any suggestions?

 

Code:

Zombie zombie = world.spawn(new Location(world, 0D, 0D, 0D), Zombie.class);

 

umm, u set it to a world, not where in the world, so that wouldent work. Also, do a entity
no entitiy zombie, that wont work

 

Didnt you take a look on which type of arguments setLocation takes? definetely not 5 ints

 

@JustRendering please tag people you answer to with @name. I didn't noticed that you answered. You can change the coordinates. Please clearly say what you want.

 

do you want a timer? and then spawn?

use a bukkit runnable after a command or on an event?