16:int index = fileName.lastIndexOf('.');
19:String prefix =fileName.substring(fileName.length()-4,fileName.length());
22:if ( prefix.equals(".java")
36:int index2 = email.indexOf('@')
19:String prefix =fileName.substring(fileName.length()-4,fileName.length());
22:if ( prefix.equals(".java")
36:int index2 = email.indexOf('@')
2015-07-27
已采纳回答 / 滋心
<...code...>这里应该是result = =result+100/divider;吧