In Japanese, surnames come before given names. Ueda is his surname, thus it should be "Ueda Hidehito," (上田秀人) but a lot of Westerners like to Westernise the name order and place it as given-name/surname order instead of surname/given-name, but it's not something that I personally do, cos it's just weird.

Japanese speakers don't force Western names to conform to Japanese name-order. e.g. Michael Bay is still called "Michael Bay" (マイケル・ベイ) in Japanese, and not "Bay Michael." Saying "Hidehito Ueda" would be akin to saying "Welker Frank," "Cullen Peter" etc.