National team boss Takeshi Okada on Tuesday underlined the importance of cutting off the supply line to lanky striker Nicklas Bendtner ahead of Japan's crucial meeting with Denmark.

The Blue Samurai go into their final Group E game in Rustenburg on Thursday night needing only a point to secure their passage into the last 16, thanks to a superior goal difference over the southern Scandinavians.

"Denmark are a good, very organized team. It won't be an easy match and the key for us will be how we deal with their aerial set pieces and long balls. We also have to try and unlock a tight defense," Okada told reporters after training at Outeniqua Park.

"We have viewed video footage of their (Denmark's) set pieces and had a good look at how they operate at the back and in offense," said Okada. "Bendtner is the key man to watch and he will be their main threat."