private void generateWall() {
		int wallX = (minX + maxX) / 2;
		Location wallStart = new Location(spawnWorld, wallX, 0, minZ);
		Location wallEnd = new Location(spawnWorld, wallX, spawnWorld.getMaxHeight(), maxZ);
		int startX = wallStart.getBlockX();
		int endX = wallEnd.getBlockX();
		int startZ = wallStart.getBlockZ();
		int endZ = wallEnd.getBlockZ();

		for (int x = startX; x < endX; x++)
			for (int y = wallStart.getBlockY(); y < wallEnd.getBlockY(); y++)
				for (int z = startZ; z < endZ; z++)
					spawnWorld.getBlockAt(x, y, z).setType(rand() ? Material.BEDROCK : rand() ? Material.GLOWSTONE : rand() ? Material.STONE : rand() ? Material.NETHER_BRICK : rand() ? Material.DIAMOND_BLOCK : Material.IRON_BLOCK);
	}