"There won't be a hard landing," Takehiko Nakao, a former Japanese vice finance minister for international affairs, told a news conference.
The regional lender has forecast the world's second-largest economy will grow 6.7 percent this year, but Nakao said that projection might be modified slightly later this month, indicating the possibility of a downward revision.
China's government has set a growth target of 6.5 percent to 7 percent this year, following a 6.9 percent expansion in 2015.
Sakurai, 70, in a report last month indicated his support for the BOJ’s asset-purchase program and recent adoption of a negative rate policy.
Oil prices fell on Wednesday after figures from an industry group showed U.S. crude stockpiles rose last week more than expected, reinforcing concerns that the global supply glut continues unabated.
The front-month contract in U.S. crude futures CLc1 was down 47 cents at $40.98 a barrel by 0753GMT. It struck a 2016 high of $41.90 in the previous session before closing at $41.45. The contract has rebounded more than 50 percent since hitting its lowest level since 2003 in February.
Brent crude LCOc1 was 45 cents lower at $41.34, reversing gains in the previous session when it finished at $41.79.
Brent has also surged more than 50 percent since hitting a multi-year low in January of $27.10 a barrel.
Reference: Reuters, The Japan Times