Java练习使用File 仿命令行DIR

import com.project.p3_team.service.Data;
import sun.util.calendar.baseCalendar;

import java.io.File;
import java.text.SimpleDateFormat;
import java.util.Date;

public class Exercise {
    public static void main(String[] args) {
        File d = new File("D:\");
        File[] files = d.listFiles();
        System.out.println(d.exists());
        for (int i = 0; i < files.length; i++) {
            Date date = new Date(files[i].lastModified());
            SimpleDateFormat sf = new SimpleDateFormat("YYYY-MM-DD hh:mm");
            String format = sf.format(date);
            System.out.print(format+ "t");
            if (files[i].isDirectory()){
                System.out.print(""+"tt");
            }else {
                System.out.print("t");
            }if (files[i].isFile()){
                System.out.print(files[i].length()+"t");
            }
            System.out.println("t"+files[i].getName());
        }
    }
}