Java - Wikipedia

Java lies between Sumatra to the west and Bali to the east. Borneo lies to the north and Christmas Island is to the south. It is the world's 13th largest island.Java is surrounded by the Java Sea to the north, Sunda Strait to the west, the Indian Ocean to the south and Bali Strait and Madura Strait in the east.. Java is almost entirely of volcanic origin; it contains thirty-eight mountains