Sorry, it wasn't. Loo it up in any Hebrew or Greek lexicon, or int the Hebrew and Greek dictionaries in the back of Strong's Exhaustive Concordance of the King James Version. In the Old Testament, the Hebrew is "yeh-ho-shoo'-ah" or "yeh-ho-shoo'-ah" and likely the same in Aramaic. But in Greek it is "ee-ay-sooce'" of which Strong says:
Of Hebrew origin [H3091]; Jesus (that is, Jehoshua pronounced ), the name of our Lord and two (three) other Israelites: - Jesus.where thew J issounded as it would be in German, with "J" sounding like "ee" as in the German word "Jah" which sounds to us in our alphabet "eeah" which we would spell as "Yah."
And I think it was not the same in Aramaic. But it is my opinion and worth nothing.
I have heard the Jehoshua argument before but there are other textual referents which argue for Jeshua.
Boy, I am feeling dumb today. I forgot about the dzhey sound was not used back then in Hebrew or Aramaic. It would be yeh. I was really out of it last night and obviously garbling in my sleep. My apologies.