What kinds of martial arts are there in Japan?

Say it briefly.

Karate is unarmed combat.

Kendo refers to using swords and weapons to deal with the enemy. Japanese kendo advocates static braking and then attacks the enemy.

judo

Judo refers to defeating the enemy with skill, without emphasizing strength and using the principle of leverage.

Aikido pays attention to throwing and taking. The reason is similar to China Tai Chi. Is to master each other's strength, wait for an opportunity to fight back, and hit people with strength.