Not that they have ever admitted - and the popular sentiment in Japan has always been very ANTI-nuclear.
However, with China becoming more aggressive, and with the nationalist Abe running the country, it's possible that they've developed them and not let anyone know. Certainly, Japan has the technology and resources to do so, and with the North Koreans threatening the use of nukes, it's entirely possible that both Japan and South Korea have their own nuclear arsenals.
Vietnam, for one.
the u.s. used non nuclear weapons and nuclear weapons against japan
Japan has no nuclear weapons.
Japan has nuclear power plants but no nuclear weapons
Japan has the technological capability to develop nuclear weapons quickly, but it has chosen not to do so due to its commitment to a non-nuclear policy.
I believe the answer you are looking for is Japan - they had a secret nuclear weapons project which was exposed.
Many countries have nuclear weapons today including the United States. China, North Korea, South Korea, and Japan also have nuclear weapons.
They are the only country to have nuclear weapons used on them in a war.
Japan has a large nuclear civil electricity industry, but no nuclear weapons
No, but Japan banned them within their own territory themselves.
Japan doesn't want any nuclear weapons.But Japan can easily produce nuclear weapons if it wanted to. It has the technology to build nuclear weapons within 1 year-- probably a few months if it wanted.However, most Japanese people are against nuclear weapons. Therefore, they do not have nuclear weapons.
In WW2 I believe they were trying to.