Wow, asking a question from four months ago. But yes, Japan does have tanks. Don't even think that Japan doesn't have a military; Japan has a full fledged armed forces, the Japanese Self Defense Forces. Its the seventh largest military in the world and one of the most high tech after the US military.
I will, again, advise other Radicons to review my public warning regarding any such derailed discussion in this thread and the resulting action from such off topic posts. I was pretty clear the first time, thus I feel no reason to explain myself again. Keep it on topic, gang.