Java java.nio.file.attribute.FileTime用法及代碼示例

import java.nio.file.attribute.FileTime;
import java.time.Instant;
import java.util.concurrent.TimeUnit;
public class GFG {
    public static void main(String[] args)
    {
        // Variables for storing time values
        long v1 = 21;
        long v2 = 356;
        // Creating an Instant.
        Instant instant
            = Instant.parse("2017-02-03T10:37:30.00Z");
        // Creating FileTime object using from
        // Method This method takes an Integer
        // value and a timeunit as parameters.
        FileTime filetime2
            = FileTime.from(v2, TimeUnit.MILLISECONDS);
        // Creating FileTime object using fromMillis method.
        FileTime filetime1 = FileTime.fromMillis(v1);
        // Creating FileTime object using from Method
        // This method takes an Instant as parameters.
        FileTime filetime3 = FileTime.from(instant);
        // Method to convert this filetime to an instant.
        Instant instantFromFileTime = filetime3.toInstant();
        // Method to convert filetime1 to this timeunit.
        System.out.println(
            filetime1.to(TimeUnit.MILLISECONDS));
        // Method to check if filetime1
        // is equal to filetime2 or not.
        if (filetime1.equals(filetime2))
            System.out.println("FileTime are equal");
        else
            System.out.println("FileTime are not equal");
        // Method to print hashvalue of filetime1.
        System.out.println(filetime1.hashCode());
        // Method to convert filetime1 to milliseconds.
        System.out.println(filetime1.toMillis());
        // Method to compare filetime1 and filetime2.
        System.out.println(filetime1.compareTo(filetime2));
        // Method to print string
        // representation of filetime1.
        System.out.println(filetime1.toString());
    }
}