The F-35 is far less dependent upon radar absorbing materials as it was not intended to be as 'stealthy' as the F-22. The airplane is not the total fiasco the F-22 program was. In no small part because of the incredibly botched F-22 program. You live, you learn.
U.S. defense contractor accused of copying secret military documents (Reuters)
from the article: Most advanced, expensive fighter jet headed to Israel