java字符串数组,Java多条件判断如何写得优雅

//字符串字符串[ ] split=cc.getteacherposition ().split(regex )； if (！ 阵列应用工具. isempty (split ) split.length 1) chaoscourseresponsedto.setteacherposition ) split(1)； //googlearrayliststringstrings=lists.new ArrayList (splitter.on (' : ).trimResults ).split ) cc.getteter if collection utils.isempty (strings ) strings.size )1) chaoscourseresponsedto.setteacherposition strings.get (1/一行pattern.compile(regex ).splitasstream (cc.getteacherposition ) ).skip(1).findFirst ).ifpreeest