日本 (Nihon)
Japanese art is inherently Japanese.
Japanese is the nationality.
the Japanese beetle originated from japan.
Japan, sharp is Japanese
The Japanese Yen is the official currency of Japan.
That would be the Jesuits who are in Japan or from Japan, perhaps you are referring to the Japanese martyrs?
Yes, "Japanese" can be a noun. It can refer to a person from Japan or the language spoken in Japan.
Japan Japanese Restaurant
Yes, She Is In Japan. And She Is Japanese.
Japan...
日本 (nihon/nippon) means "Japan" in Japanese.
Anime Originated From The Japanese. (Japan =) )