java面向对象考试题(共14页).docx

精选优质文档-倾情为你奉上第一题:public static void main (String args)String fileNames = abc.txt, bcd.exe, cde.exe,def.dat,efg.exe ; for (String fileName : fileNames) if (fileName.endsWith(.exe) System.out.print(fileName.substring(0, fileName.lastIndexOf(.exe)+ );fileName.endsWith(.exe)判断是否已.exe结尾substring(0,4)截取0-3的字符串,不包含4lastIndexOf(.exe)获取.exe最后一次出现的位置答案:bcd cde efg第二题:public static void go