Use of the word 'Jap' - is it offensive?

I know some ppl use to said japanese short form 'jap' but until now i didn't realise that it was inappropriate to call it in short, well i rarely said 'jap' to my frens or anyone else and i use to said it in full form 'japanese' so ppl will understand easier..well not everyone in this world know the that 'jap' is an offense word so just correct them to use 'japanese' instead of 'jap'...i saw some ppl just condemn on other ppl post when they use the word jap.. :sweat:

Growing up in America at least, I was always taught that this word was as bad as the n-word and other slurs.