In my Izhitsa font does not have the classic J.
Instead, J is another sign.
For this reason, I can not write words with the letter J
Can anyone lend me a letter J with this font?

http://www.myfonts.com/fonts/paratype/izhitsa/
So apparently, you should have the J.
Also, lending is illegal since this is a commercial font.

Perhaprs your font is just a demo version to try.