// A
for (Player p : Bukkit.getOnlinePlayers()) {
    if (p.hasPermission("snoopy.getnotified")) {
        p.sendMessage(ChatColor.translateAlternateColorCodes('&', message));
    }
}

// B
Bukkit.getOnlinePlayers().forEach(p -> {
	if (p.hasPermission("snoopy.getnotified")) {
		p.sendMessage(ChatColor.translateAlternateColorCodes('&', message));
	}
});

// C
Bukkit.getOnlinePlayers().stream().filter(p -> p.hasPermission("snoopy.getnotified")).forEach(
	p -> p.sendMessage(ChatColor.translateAlternateColorCodes('&', message)));

// D
Collection<? extends Player> players = Bukkit.getOnlinePlayers();
players.removeIf(p -> !p.hasPermission("snoopy.getnotified"));
players.forEach(p -> p.sendMessage(ChatColor.translateAlternateColorCodes('&', message)));