https://tradingeconomics.com/japan/gdp
On the ground, this has translated into flat or deflating prices (until very recently) and an increasing bifurcation of society into salarymen, with low but stable incomes anchored on jobs-almost-for-life, and part-timers on temporary contracts, with groups like single mothers living in poverty. Population is shrinking by close to 1M/year, the rural countryside is rapidly emptying out as young people flock into cities to chase opportunities, and the national pension scheme will sooner or later implode since it can't support 1 worker paying for 4 retirees forever. It's frankly depressing and there's no obvious way out.