I do not understand this. Japan imports almost all of its oil and commodities. Shouldn't low price of oil and commodities result in a massive surplus for a country that sells high value added goods ? Buy iron for cheap and sell robots for a high price. Now the argument many people will make is that the people who are buying the high-value added goods won't have money anymore - but the argument can be made in the oppo…
Japan has free floating currency with inflation-targeting framework.
Japan's import-export balance adjusts more or less automatically because the currency floats relative to other currencies. Japan has very little foreign debt, so the huge national debt is not creating inflationary pressure trough exchange rates.
Japanese yen suffering from long period of low inflation and deflation (lost decade) is caused by the lack of structural reforms and demographics. Japan is getting old fast and people are saving for their retirement. Domestic consumption is not taking off
To put things into perspective:
Household consumption makes 61% of the Japanese GDP
Exports of goods and services is just 16.2%