@EventHandler
public void onBlockClick(PlayerInteractEvent event) {
    if (event.getAction() != Action.RIGHT_CLICK_BLOCK) return;

    Player player = event.getPlayer();
    Location clickedBlock = event.getClickedBlock().getLocation();

    List<WorldArea> areas = worldAreaFactory.fromLocation(clickedBlock);
    String areasNames = areas.stream().map(WorldArea::getName).collect(Collectors.joining(","));

    player.sendMessage(ChatColor.translateAlternateColorCodes(
        '&', "&cYou have clicked at a block inside: &a"+areasNames
    ));
}

@EventHandler
public void onJoin(PlayerJoinAreaEvent event) {
    Player player = event.getPlayer();
    WorldArea area = event.getWorldArea();

    String message = ChatColor.translateAlternateColorCodes(
        '&', "&aYou joined to &e" + area.getName()
    );
    player.sendTitle("World Areas", message, 1, 20, 1);
}

@EventHandler
public void onLeave(PlayerLeaveAreaEvent event) {
    Player player = event.getPlayer();
    WorldArea area = event.getWorldArea();

    String message = ChatColor.translateAlternateColorCodes(
        '&', "&cYou left to &e" + area.getName()
    );
    player.sendTitle("World Areas", message, 1, 20, 1);
}