The Japanese alphabet is entirely different. It consists of sounds rather than what we in the West think of as letters.
There are Japanese characters that represent the three different sounds - ja, ju and jo - that exist in other languages. They are, respectively, these:
ジャ
ジュ
ジョ
The word for Japan in Japanese is 日本 and it is pronounced nee-hon.
There is no Japanese word that begins with J because J does not exist as a separate and distinct letter in the Japanese alphabet.
Justice..........
Jackal
Jar
jackaljaguarjeepjellyfishjetjetstreamjungle
· Japanese Chin
Aj
January, Jello and juice are cold. They begin with the letter j.
Japanese beetle, Jewel Beetle, June bug and Juniper Hairstreak Butterfly are insects. They begin with the letter j.
· Jack Daniels · Java · Juice
jade, jalapenos
Joliette is a city in Quebec
Tangible objects that start with the letter j:jacketjeansjerseyjewelryjackknifejavelinjawbonejellybeanjug