Ju-Jitsu

 Ju-jitsu is an very old japanese martial art, one of the oldest in Japan. In Ju-jitsu you have strikes like in karate, throws like in judo(but Judo is based on Ju-Jitsu) and joint locks like in aikido. It is a very complete martial art and one of the most popular in the world. People all over the world train also the BJJ(Brazilian Ju-Jitsu), but this is actually based on Judo so it should be called BJ.