public class Main { public class Introduction { privatefinalstaticString name = "Xiang GAO"; privatefinalstaticString role = "Undergraduate"; privatefinalstaticString region = "Haidian, Beijing"; privatefinalstaticString school = "China University of Geoscience, Beijing"; privatefinalstaticString interest = "Coding, Algorithm, Web"; privatefinalstaticString mail = "gyshgx868 AT gmail DOT com";