First of all, Tokyo is a prefecture, something like a state. The Tokyo that most foreigners know is only a quarter of the prefecture. If you want country, then you can fix your question to "Is Japan a communist country?", and...
No it never was. Today's Japanese government was mostly set up by the United States after WWII. Even before WWII, reds (communists), if found, were arrested and either deported or executed.
Japan used to be Imperialist, and now I'm sure it is now democratic.
I hope you are not mixing Japan with China and North Korea, which are neighboring communist countries.
it is capitalist
capitalist
A capitalist economy since its conception.
Japan is a little of both because it has parliament and an emperor who is head of state but stays out of politics, a bit like the UK
Both The North had and still has a communist government. The South had and still has a capitalist government
Two separate states formed when Korea gained independence from Japan, with Communist North Korea and Capitalist South Korea
No, it has a capitalist economy.
Russia is still in transition from a communist economy to a capitalist one. There have been some successes, but the nation is still in some turmoil economically.
Nigeria is a capitalist country.
No, it's capitalist, it has always been.
neither, they're theocratic.
Yugoslavia is no longer a country. Before its breakup it was a Communist country.
No Japan has a capitalist economy.