In the Romance lanuagges (Spanish, Italian, French   all lanuagges that spun off of Latin, spoken in Rome, thus called  Romance  lanuagges) the J sound is not like  jar  or  jump  but more of a Y sound, like  year . When I took 4 years of Spanish instruction, we learned that in some cases, the J has an H sound. I'm not sure how in modern English J came to sound exclusively like  jar  or  jump .