Central Java ash makes Central Java highly fertile agriculture land. Paddy fields are extensive, except in the southeastern Gunung Kidul region partly due to the high concentration of limestone and its location in a rain shadow from the prevailing weather. The largest rivers are the Serayu in the west, which empties into the Indian Ocean, and the Solo which flows into East Java. On the eve of the World War II in 1942, Central Java was subdivided into 7 residencies (Dutch "residentie" or plural "residenties", Javanese "karésiḍènan" or "karésidhènan") which corresponded more or less with the main regions of this area. These
West Java Java Province to Central or East Java Provinces is literally said to be moving from Sunda to Java worlds. Bandung, the capital city of West Java, is considered as the cultural heartland of Sundanese people. Many indigenous Sundanese artforms were developed in this city. The nearby province of Banten, which was formerly part of West Java before it became its own province, is similar in this regard and is also considered to be part of "Pasundan" as well. The musical arts of Sunda, which is an expression of the emotions of Sundanese culture, express politeness and grace of Sundanese. Degung