Serious question. Can they even recover their economy? Their GDP in 1995 was bigger than now. Can they even afford increasing military spending?
How??? Japan is an aging country with lots of old population, and population is also shrinking with low birth rate...these two factors alone are telling their economy prospect in future. Their economic rise was killed off by their master in 1985 thru the Plaza Accord.
Unlike in the past, Japan's competitiveness is decreasing nowadays. Both South Korea and China eat up their market share and push them aside at various levels. Managing their decline in orderly fashion may be the solution. But if they opt to play hostile against China then I don't know how they will manage their economy.
In the last several years Japan attempted to increase their service sectors, being aggressive in tourism biz by very actively promoting for international market: more relaxed visa (in 1990s Japan's visa was very strict), discounted air ticket price to visit Japan, etc. I visited Hokkaido in autumn 2019 with my wife. Still Japan is an expensive country to visit compared to other parts of Asia: hotel, meal, transport (even with the international railway pass) are more costly than other Asia. Hospitality and services are good. And cost for dinner meal is higher than lunch meal. This pandemic should hit their economy very hard.