Java tutorial
import java.io.File; import java.util.Date; public class Main { public static void main(String[] args) throws Exception { File fileToChange = new File("C:/myfile.txt"); Date filetime = new Date(fileToChange.lastModified()); System.out.println(filetime.toString()); System.out.println(fileToChange.setLastModified(System.currentTimeMillis())); filetime = new Date(fileToChange.lastModified()); System.out.println(filetime.toString()); } }