Shrinking Japan. Is it too late?

2019/ 01/ 15
The workforce is declining because of population decrease.  If economy sees no growth for a decade or so, is Japan shrinking?  Will we see a poor society with lots of homeless people on the street?  Will Tokyo be full of the Japanese panhandlers while there are lots of foreigners or immigrants?
Am I imagining too much?  I hope so.  But who knows.  
I sometimes wonder what the Japanese government has been preparing so far for the poor society where two-thirds of people are the elderly.