Java (Inonesian: Jawa) is an island of Indonesia and the site of its capital city, Jakarta. Once the centre of powerful Hindu kingdoms and the core of the colonial Dutch East Indies, Java now plays a dominant role in the economic and political life of Indonesia. Housing a population of 130 million in 2006, it is the most populous island in the world, ahead of Honshū, the main island of Japan. Java is also one of the most densely populated regions on Earth.