Parts of the plane have been recovered during search operations at sea.
It is not known why the plane, which is less than a year old, lost contact and crashed.
The fighter jet went missing at 7.27pm. on Tuesday as it was flying 135km east of Misawa, a city in northeast Japan.
It lost contact about 30 minutes after taking off from the Misawa Air Base. No problems with the aircraft had previously been reported, according to Japan's public broadcaster NHK.
Rescue teams were continuing their search for the male pilot who was in his 40s, according to news site Kyodo.
Japan has been deploying F-35s, which cost at least $90 million, to replace its ageing F-4 fighter jets.
The country has now grounded its 12 remaining F-35 fighter jets at the Misawa base temporarily, said Defence Minister Takeshi Iwaya.
Gaza Now's Arabic channel has more than 300,000 followers on social media channel X, and a large following on Telegram
The iftar gathering served as a platform for people from diverse backgrounds to come together, socialise, and rejoice in the celebration
The monk was charged for comments made at a press conference held in March 2016.
The facility will provide greater access to residents from Liwa, Mirfa, Gayathi, Ruwais, Tarif from Western Region
High taxes, rising prices and rents, and fewer opportunities in those countries are prompting many to return to the Emirates, say experts
The UAE already has a 10-year Golden Visa programme for investors, entrepreneurs, property buyers and outstanding students since 2019
The anniversary coincides with the UAE’s decision to extend the ‘Year of Sustainability’