Teleport a player from one world to another?

I need to teleport a player from one world to another
so i used a player respawn event but i can't find out how to teleport from one world to spawn in another
i have a config so the string to get the world name would be confg.getString("Heaven")
and for normal map config.getString("Normal Map")
So my plugin won't make the other world they need will need a plugin like MultiVerse.

 

Teleporting is based off of a Location.

player.teleport(Location);

 

I believe a Location object contains X, Y, Z, pitch, yaw, and world; you can set its world with somelocation.setWorld(someworld)
Or you can state it when you create a new Location, as the constructor goes Location(World world, double x, double y, double z)

 

Location loc = event.getPlayer().getLocation();
loc.setWorld(What should i have here?);
as "world", world and config.getString("Normal Map") won't work?

 

i don't think a string would work... i think you need Bukkit.getServer().getWorldByName(<name of world>); if you want to get the world by the name.