Question

Please advise for the algorithm let say If a file def.txt is created in C: then it should not be modified within 1 hour itself, if it is not modified within 1 hour I have to print in console “file is not modified” and If it is modified with in 1 hour itself then I have to print the statement “that file is modified” please advise how to write such algorithm in java or how to achieve this in java

Answer 1

public static void main(String[] args) {
File f = new File("/temp/t.txt");
long lastModified = f.lastModified();
long currentTime = System.currentTimeMillis();
long difference = currentTime - lastModified;
// time is in milliseconds, one hour is 60 * 60 * 1000 milliseconds
long oneHour = 1000 * 60 *60;
if (difference > oneHour)
    System.out.println("file is not modified");
else
    System.out.println("that file is modified");
}