"The easing hasn't ended," said Hiroaki Muto, a senior economist at Sumitomo Mitsui Asset Management. "It's possible that the BOJ will next ease around January."
The Nikkei 225 Stock Average soared 1.09% per cent, or 96.23 points, to 8,938.21. The broader Topix Index jumped 1.29% per cent, or 9.48 points, to 742.94.