Solved Getting null error on a switch

I don´t have experience on this kind of objects and, it give me null error. Code:

Code (Text):

  public static ArrayList<Block> getSurroundingBlocks(BlockFace blockFace, Block targetBlock) {
      ArrayList<Block> blocks = new ArrayList<Block>();
      World world = targetBlock.getWorld();
      int x = targetBlock.getX();
      int y = targetBlock.getY();
      int z = targetBlock.getZ();
      switch (blockFace) {
          case UP:
          case DOWN: {
              blocks.add(world.getBlockAt(x + 1, y, z));
              blocks.add(world.getBlockAt(x - 1, y, z));
              blocks.add(world.getBlockAt(x, y, z + 1));
              blocks.add(world.getBlockAt(x, y, z - 1));
              blocks.add(world.getBlockAt(x + 1, y, z + 1));
              blocks.add(world.getBlockAt(x - 1, y, z - 1));
              blocks.add(world.getBlockAt(x + 1, y, z - 1));
              blocks.add(world.getBlockAt(x - 1, y, z + 1));
              break;
          }
          case EAST:
          case WEST: {
              blocks.add(world.getBlockAt(x, y, z + 1));
              blocks.add(world.getBlockAt(x, y, z - 1));
              blocks.add(world.getBlockAt(x, y + 1, z));
              blocks.add(world.getBlockAt(x, y - 1, z));
              blocks.add(world.getBlockAt(x, y + 1, z + 1));
              blocks.add(world.getBlockAt(x, y - 1, z - 1));
              blocks.add(world.getBlockAt(x, y - 1, z + 1));
              blocks.add(world.getBlockAt(x, y + 1, z - 1));
              break;
          }
          case NORTH:
          case SOUTH: {
              blocks.add(world.getBlockAt(x + 1, y, z));
              blocks.add(world.getBlockAt(x - 1, y, z));
              blocks.add(world.getBlockAt(x, y + 1, z));
              blocks.add(world.getBlockAt(x, y - 1, z));
              blocks.add(world.getBlockAt(x + 1, y + 1, z));
              blocks.add(world.getBlockAt(x - 1, y - 1, z));
              blocks.add(world.getBlockAt(x + 1, y - 1, z));
              blocks.add(world.getBlockAt(x - 1, y + 1, z));
              break;
          }
    default:
        break;
      }
      blocks.removeAll(Collections.singleton((Object)null));
      return blocks;
  }

The error on console is null and its on line 1115:

Code (Text):

      switch (blockFace) {

 

Posted

 

Srry, i forgott it, now posted

 

I get the blockFace from this method:

Code (Text):

  private HashMap<String, BlockFace> faces = new HashMap<String, BlockFace>();
    @EventHandler(priority = EventPriority.LOW, ignoreCancelled = true)
    public void saveBlockFace(PlayerInteractEvent event) {
        Player player = event.getPlayer();
        BlockFace bf = event.getBlockFace();

        if (player != null && bf != null) {
            String name = player.getName();
            faces.put(name, bf);
        }
    }
    public BlockFace getBlockFaceByPlayerName(String name) {
        return faces.get(name);
    }

I use the 2nd method

 

Trim the nulls from the list

 

It add it on saveBlockFace() method

 

Solved! The problem was on the HashMap, i changed it to the Main class and now works, thanks to all for the help