How to generate a wall in front of player? Where player is facing?

Hello everyone, i want to generate a wall in front of player, where it is facing, so i don't know how can i do it. Does anyone can help me? Here is my code:

Code:

                    double x1 = p.getLocation().getX();
                    double y1 = p.getLocation().getY();
                    double z1 = p.getLocation().getZ();
                   

                    double x;
                    double y;
                    double z;
                    for (x = x1; x < x1 + 7; x++) {
                        for (y = y1; y < y1 + 2; y++) {
                            for (z = z1; z < z1 + 1; z++) {
                                Location loc = new Location(p.getWorld(), x, y, z);
                                Block b = loc.getBlock();
                                b.setType(Material.PORTAL);
                                warderPortal.add(b);
                                b.getWorld().playEffect(b.getLocation(), Effect.PORTAL, 4);

                                Bukkit.getScheduler().scheduleSyncDelayedTask(kHungerBukkit.getInstance(),
                                        new Runnable() {

                                            @Override
                                            public void run() {
                                                b.setType(Material.AIR);
                                            }
                                        }, 5 * 20);

 

@darknoneee You can use this method to get the BlockFace. Afterwards, you can use Block#getRelative(BlockFace, int) to get the block a distance away in that direction.