Delete Blocks With Location

I'm attempting to make a plug-in for a pvp/survival map called TheWalls,
and I need a plugin to change blocks at certain locations to air, or zero, or something.
I tried to do it, but failed miserably, if anyone can help, I would extremely appreciate it.

If I remember correctly...

Code:

loc.getBlock().setType(Material.AIR);

EDIT: I suppose that you also need a way to get all blocks in a certain area...
Given that loc0 represents the corner with the largest X,Y,Z coordinates, loc1 represents the corner with the smallest X,Y,Z coordinates:

Code:

for(int x = loc1.getBlockX(); x < loc0.getBlockX; x++) {
  for(int z = loc1.getBlockZ(); z < loc0.getBlockZ; z++) {
    for(int y = loc1.getBlockY(); y < loc0.getBlockY; y++) {
      // do stuff here
    }
  }
}

That's pretty basic stuff here

Thank you, this will help a lot.

Is there a way to set the world in the location? I keep using player.getWorld, and it's not going to work for this.

Depends on what you are doing and when. Can you post a snipit of your code where player.getWorld(); wouldnt work?

Code:

while (xx<=409 && zz<=-731) {
                                //TODO
                                Location delPlanksXLocation = new Location(onlinePlayer.getWorld(), xx, 112,
                                        -409);
                                Location delPlanksXLocation = new Location(onlinePlayer.getWorld(), 347, 112,
                                        zz);
                                delPlanksXLocation.getBlock().setType(Material.AIR);
                                delPlanksZLocation.getBlock().setType(Material.AIR);
                                xx--;
                                zz--;
                            }

(ignore the //TODO)

You can create a new location by passing a different world, but the same coordinates of another location. Here is one constructor for Location:

Code:

public Location(World world,
        double x,
        double y,
        double z)

Thank you, dark navi, but when I posted that into my code I got a lot of errors, and I wasn't sure how to use it, is there another way, or could someone explain how to do it, or give me a link explaining it?