Is there a new Java 8 way of retrieving the file extension?

Question

What I did up until now is following:

String fileName = \"file.date.txt\";
String ext = fileName.substring(fileName.lastIndexOf(\'.\') + 1);

System.out.printf(\         


        

Answer 1

Use FilenameUtils.getExtension from Apache Commons IO

Example:

You can provide full path name or only the file name.

String myString1 = FilenameUtils.getExtension("helloworld.exe"); // returns "exe"
String myString2 = FilenameUtils.getExtension("/home/abc/yey.xls"); // returns "xls"

Hope this helps ..