Java (Javanese, Indonesian, and Sundanese: Jawa) is an land mass of Indonesia and the place of its capital city, Jakarta. Once the centre of controlling Hindu kingdoms and the heart of the colonial Dutch East Indies, Java now plays a governing role in the money-making and supporting life of Indonesia. With a population of 124 million, it is the most heavily populated island in the world; it is also one of the most thickly populated regions on Earth.
Java shaped mostly as the result of volcanic events, Java is the 13th leading island in the world and the fifth major island of Indonesia. A sequence of volcanic mountains forms an east-west spine along the island. It has three main languages, and most populace are bilingual, with Indonesian as their second language. While the popular of Javanese are Muslim (or at least supposedly Muslim), Java has a different mixture of religious beliefs and cultures.