Japan will recover. Their rate of personal savings is among the highest in the world. Despite their rate of industrialization, they have a national health insurance plan where the government covers 70% of health care expenses, the individual pays for the other 30%. Preventive care is covered in full. Japan is primarily a closed economic system; they sell to their own first. Among the things that they import are oil, lumber and food, primarily meat.
The two things that will slow recovery are 1) the fact that nuclear energy accounts for ⅓ of the energy that powers their economy, and they are losing 25% of that energy source, 2) in a land-strapped country, the radioactive contamination of land will hamper their development.
Japan is not politically fragmented; they will dig in and get done what needs to be done.