Why HP printer is not supported in MacBook

[Josephwhitewolf]

Hi,
This is Joseph White Wolf and I have facing a problem with my MacBook. I can't understand why it doesn't support the HP printer. This is so irritating. Are there someone who has an effective solutions?
Regards
Joseph White Wolf

 

[kanewolf]

Which HP printer? How are you attempting to connect ? USB, network? Print only or scan and print? Which version of OS?