Java, also pronounced Jawa in Indonesian, is one of the Greater Sunda Islands in Indonesia. It is bordered by the Indian Ocean to the south and the Java Sea to the north. With a population of 156.9 million people, Java is the world's most populous island, home to approximately 55.7% of the Indonesian population. Indonesia's capital city, Jakarta, is on Java's …Java, also pronounced Jawa in Indonesian, is one of the Greater Sunda Islands in Indonesia. It is bordered by the Indian Ocean to the south and the Java Sea to the north. With a population of 156.9 million people, Java is the world's most populous island, home to approximately 55.7% of the Indonesian population. Indonesia's capital city, Jakarta, is on Java's northwestern coast.