The Bank of Japan (BOJ) on Tuesday stuck to its stimulus program and projections that inflation will reach its 2 percent target next year, despite recent downbeat data that reignited concerns over the world's third-biggest economy.

The central bank also cut its growth projection for the current financial year to 1.0 percent, from 1.1 percent, but kept its 2015 and 2016 growth targets intact at 1.9 percent and 2.1 percent, respectively.