Rangga Wulung. Central Java (Indonesian Jawa Tengah) is a province of Indonesia located in the middle of the island of JavaIts administrative capital is SemarangIt is bordered by West Java in the west the Indian Ocean and the Special Region of Yogyakarta in the south East Java in the east and the Java Sea in the north It has a total area of 3280069 km² with a population of 36516035 at.