Finance Minister Sadakazu Tanigaki predicted Saturday the Bank of Japan will maintain an accommodative monetary environment to continue sustainable economic growth.

"The BOJ will continue to underpin Japan's economy toward realizing sustainable growth under price stability by maintaining an accommodative monetary environment," Tanigaki said in a speech during a meeting of the International Monetary and Financial Committee, the policy-setting panel of the International Monetary Fund.

He remained upbeat over the course of the economy.

"Japan's economy continues to recover amid a mild deflationary phase," Tanigaki said, adding the recovery is expected to continue, bolstered by domestic private demand.