The Bank of Japan reported an upbeat assessment of the country's regional economies on Monday thanks to growth in production, exports, domestic consumption and sales of durable goods and luxury items.
Published quarterly, the central bank's Regional Economic Report also noted growth in construction and the manufacture of production machinery as public spending on disaster relief programmes and public construction orders increased.
Six of the BoJ's nine regions said their economies had been expanding moderately or turning towards moderate expansion, while three noted their economies had continued to recover moderately.
The bank noted that income and spending had firmed as labour markets steadily tightened and private consumption "increased its resilience". Thanks also to economic growth globally, exports were trending higher.
Bank governor Haruhiko Kuroda told reporters at the press conference accompanying the report that the country's economy was expected to "continue expanding moderately".
The BoJ upgraded its economic assessment of five its regions and maintained an optimistic appraisal of the other four.
Separately, Japan's "economy watchers" measure of business confidence improved in June for the third consecutive month.
The so-called economy watchers are workers whose jobs are sensitive to economic conditions in Japan, such as construction workers, restaurant staff and taxi drivers, and the index based on their assessments rose to 50 in May from 48.6 in April.
A greater than 50 reading indicates that those who report improving conditions outnumber the pessimists, and vice versa.
Improvements in auto sales, personal goods, hotel and flight bookings all contributed to growth in the index after a poll of nearly 2,000 workers.