How to get the last modification time of a directory in java?

This can be done through file.lastModified() method of File class.

import java.io.File;
import java.util.Date;

public class DirTest {
   public static void main(String[] args) {
      File file = new File("C://FileIO//demo.txt");
      System.out.println("last modifed:" + 
      new Date(file.lastModified()));
   }
}