On Linux (kernel version 4.11 and better, glibc 2.28 and better) there is a Linux specific statx system call that supports reading the birth time of a file. We should add specific code on that platform to support reading the creation time for files on Linux. Windows and MacOSX already support this on the common filesystems.

This code:

import java.nio.file.*;
import java.nio.file.attribute.BasicFileAttributes;

public class LastModified {
    public static void main(String[] args) throws Exception {
        var attrs = Files.readAttributes(Path.of(args[0]), BasicFileAttributes.class);

        System.out.printf(
            "created: %s\nmodified: %s\n%n",
            attrs.creationTime(),
            attrs.lastModifiedTime()
        );
    }
}

... shows the last modified time as the creation time on Linux. Example sequence:

$ echo testme > testing.txt
$ touch -m -t 200001010101 testing.txt
$ java LastModified testing.txt
created: 2000-01-01T00:01:00Z
modified: 2000-01-01T00:01:00Z
$ stat testing.txt | grep Birth
 Birth: 2023-09-14 17:43:04.893739324 +0200

The expected output of the above program would be something resembling the "Birth:" time as shown by the native 'stat' tool (which internally uses 'statx').