package com.example.demo.utils;

import java.io.File;
import java.util.Arrays;
import java.util.Comparator;
import java.util.Date;

public class FileUtil {
    public static void main(String[] args) {
//        File file = new File("d:/");
//        File[] fs = file.listFiles();
//        Arrays.sort(fs, new FileUtil.CompratorByLastModified());
//        for (int i = 0; i < fs.length; i++) {
//            System.out.println(fs[i]);
//            System.out.println(new Date(fs[i].lastModified()).toLocaleString());
//        }
    }

    static class CompratorByLastModified implements Comparator<File> {
        public int compare(File f1, File f2) {
            long diff = f1.lastModified() - f2.lastModified();
            if (diff > 0)
                return 1;
            else if (diff == 0)
                return 0;
            else
                return -1;
        }

        public boolean equals(Object obj) {
            return true;
        }
    }
}