How do I get the file name from a String containing the Absolute file path?

Support windows and linux path 

Using FilenameUtils in Apache Commons IO :

String name1 = FilenameUtils.getName("/ab/cd/xyz.txt");
String name2 = FilenameUtils.getName("c:\\ab\\cd\\xyz.txt");

from: https://stackoverflow.com/questions/14526260/how-do-i-get-the-file-name-from-a-string-containing-the-absolute-file-path