Returns a file's last modified time. The
options
array may be used to indicate how symbolic links are handled for the case that the file is a symbolic link. By
default, symbolic links are followed and the file attribute of the final target of the link is read. If the option
LinkOption#NOFOLLOW_LINKS
is present then symbolic links are not followed.
package com.logicbig.example.files;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.attribute.FileTime;
public class GetLastModifiedTimeExample {
public static void main(String... args) throws IOException {
Path tempFile = Files.createTempFile("test-file", ".txt");
FileTime lastModifiedTime = Files.getLastModifiedTime(tempFile);
System.out.println(lastModifiedTime);
}
}
Output
2017-12-11T03:57:15.462634Z
This code must be run will Admin privilege. See Files.createSymbolicLink()
example for more details.
package com.logicbig.example.files;
import java.nio.file.Files;
import java.nio.file.LinkOption;
import java.nio.file.Path;
public class GetLastModifiedTimeExample2 {
public static void main(String... args) throws Exception {
Path tempDirectory = Files.createTempDirectory("test-dir");
Path path = Files.createTempFile(tempDirectory, "test-file", ".txt");
System.out.println("src last modified: " + Files.getLastModifiedTime(path));
//creating a symbolic link
Path symbolicLink = Files.createSymbolicLink(path.getParent().resolve("sym-linked-file"), path);
System.out.println("sym last modified: " + Files.getLastModifiedTime(symbolicLink));
//pause for a while
Thread.sleep(1000);
//modify source
System.out.println("-- modifying the original file --");
Files.write(path, "test content".getBytes());
//get last modified again
System.out.println("src last modified: " + Files.getLastModifiedTime(path));
System.out.println("sym last modified: " + Files.getLastModifiedTime(symbolicLink));
System.out.println("sym last modified with NOFOLLOW_LINKS option: " +
Files.getLastModifiedTime(symbolicLink, LinkOption.NOFOLLOW_LINKS));
}
}
Output
src last modified: 2017-12-11T04:35:39.033711Z
sym last modified: 2017-12-11T04:35:39.033711Z
-- modifying the original file --
src last modified: 2017-12-11T04:35:40.04793Z
sym last modified: 2017-12-11T04:35:40.04793Z
sym last modified with NOFOLLOW_LINKS option: 2017-12-11T04:35:39.038717Z