treefeller, obeys protections, nicely formatted

  @EventHandler(priority = EventPriority.HIGHEST, ignoreCancelled = true)
  public void onblockBreak(BlockBreakEvent event) {
    // Get player and block
    Player player = event.getPlayer();
    Block brokenBlock = event.getBlock();

    // If block is a log
    if (brokenBlock.getType() == Material.LOG || brokenBlock.getType() == Material.LOG_2) {

      // Get the location of the broken block
      Location loc = brokenBlock.getLocation();
      loc.add(0, 1, 0);

      // Get the block above it
      Block aboveBlock = brokenBlock.getWorld().getBlockAt(loc);

      // If the block above is also a log
      if (aboveBlock.getType() == Material.LOG || aboveBlock.getType() == Material.LOG_2) {

        // Create event
        BlockBreakEvent aboveBreakEvent = new BlockBreakEvent(aboveBlock, player);
        // Call event
        Bukkit.getServer().getPluginManager().callEvent(aboveBreakEvent);

        // If break event was not cancelled by a lower priority listener
        if (!aboveBreakEvent.isCancelled()) {
          // Break the block above this one
          aboveBlock.breakNaturally();
        }
      }
    }
  }