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Java is Indonesia's fifth-largest island. Its 130 million people make up 65% of Indonesia's entire population, and makes Java the most populated island in the world. Covering an area of 127,569 sq. km (7% of Indonesia's area) and with a population density of 940 people/sq. km, Java is the world's most crowded major island as well.

Jakarta, the capital of Indonesia, is located on northwest region of Java. Surabaya (the second largest city in Indonesia), is located on East Java. Java acts as Indonesia's center of cultural and economic activity.

This is a quite remarkable island geographically with no less than 121 active volcanoes. Add to that a host of major national parks and, despite its very crowded nature, the island has lots to offer the visitor who appreciates outdoor attractions.

The main ethnic group in Java is Javanese, except for the West Java region where most people are Sundanese. In the province of East Java, 22% of the population is of Madurese descent. Half of them live on the island of Madura.