在Java中我们可以使用DateTimeFormatter把FileTime转换为自定义的格式。

public static String formatDateTime(FileTime fileTime) {

LocalDateTime localDateTime = fileTime

.toInstant()

.atZone(ZoneId.systemDefault())

.toLocalDateTime();

return localDateTime.format(

DateTimeFormatter.ofPattern("MM/dd/yyyy HH:mm:ss"));

}

1. 文件最后访问日期

该例子演示了如何使用自定义的格式显示文件的最后访问日期。

package com.mkyong.io.howto;

import java.io.IOException;

import java.nio.file.Files;

import java.nio.file.Path;

import java.nio.file.Paths;

import java.nio.file.attribute.BasicFileAttributes;

import java.nio.file.attribute.FileTime;

import java.time.LocalDateTime;

import java.time.ZoneId;

import java.time.format.DateTimeFormatter;

public class GetLastModifiedTime {

private static final DateTimeFormatter DATE_FORMATTER =

DateTimeFormatter.ofPattern("MM/dd/yyyy HH:mm:ss");

public static void main(String[] args) {

String fileName = "/home/mkyong/test";

try {

Path file = Paths.get(fileName);

BasicFileAttributes attr =

Files.readAttributes(file, BasicFileAttributes.class);

// default YYYY-MM-DDThh:mm:ss[.s+]Z

System.out.println("lastModifiedTime: " + attr.lastModifiedTime());

FileTime fileTime = attr.lastModifiedTime();

System.out.println("lastModifiedTime: " + formatDateTime(fileTime));

} catch (IOException e) {

e.printStackTrace();

}

}

public static String formatDateTime(FileTime fileTime) {

LocalDateTime localDateTime = fileTime

.toInstant()

.atZone(ZoneId.systemDefault())

.toLocalDateTime();

return localDateTime.format(DATE_FORMATTER);

}

}

输出

lastModifiedTime: 2020-07-20T09:29:54.627222Z

lastModifiedTime: 07/20/2020 17:29:54