Get nearby coordinates (not entities)

I am making a plugin that is quite like MobArena, spawning mobs when rounds change, lobbies before playing in an arena, etc.

I have a decent way of spawning mobs, but instead of getting nearby mob spawn points, it spawns a mob at each mob spawn. I can't find a way to get a "cube" around a player, and search that cube for a set of coordinates. Sort of like WorldEdit?

I use getMobSpawn(String arena, int spawn) to find a mob spawn (pa is the main class):

Code:

public Location getMobSpawn(String arena, int spawn){
        return new Location(Bukkit.getWorld("world"), pa.getConfig().getInt(arena + ".mobspawns." + spawn + ".x"), pa.getConfig().getInt(arena + ".mobspawns." + spawn + ".y"), pa.getConfig().getInt(arena + ".mobspawns." + spawn + ".z"));
}

So using getMobSpawn, and a loop, how can I get nearby mob spawns?

 

When you try to access an integer from the config, you should do a check to see if it exists (could throw a NullPointerException. For creating a cube, just add X, Y and Z values to the initial location.

 

I figured as much to create a cube, but how do you get a range of coordinates so you can see if it contains a certain set of coordinates?

 

When you loop through the blocks with a for-loop, save them to an ArrayList<Location>:

Code:java

<arraylist>.add(new Location(world, x, y, z));