You can say they have had net inflation if you pick your time range correctly, but the graph shows spurts of deflation followed by spurts of deparate inflation via QE that doesn't solve the deflation.
Google "Japan deflation" today and you'll get articles from yesterday describing how they are still trying to fight this problem.
http://www.tradingeconomics.com/japan/inflation-cpi
You can say they have had net inflation if you pick your time range correctly, but the graph shows spurts of deflation followed by spurts of deparate inflation via QE that doesn't solve the deflation.
Google "Japan deflation" today and you'll get articles from yesterday describing how they are still trying to fight this problem.