Explorer Java Program

I was commissioned to do an exercise that is as follows:

Make a program in Java that simulates a file browser.

Once the program has been executed, starting from the project folder, you must allow the user to perform the following actions:

• With "cd .." it will go to the folder. If it is in the root it will not do anything.
• With "cd name" you will go to the folder named "name". If it does not exist, it will give an error. "Name" can be a relative path to a folder or an absolute path to a folder.
• With "ls" it will show the contents of the current folder.
• With "ls -l" it will show the contents of the current folder indicating for each file and folder its size and modification date.
• With "quit" the program ends.
• With "the name" delete the file or folder named "name". If the folder is not empty, show the message "Folder name is not empty".
• With "del -r name" delete all the contents of the folder named "name" whether it is empty or not.
• With "mkdir name" creates the empty folder named "name". "Name" can be a relative or absolute path. It may be the case that they have to create folders in between.
• With "mv name1 name2" move the file or folder named "name1" to "name2". Both "name1" and "name2" will be absolute paths.

If the user enters a nonexistent order, "Error: invalid command" will be notified and nothing will be done.

But I was stuck, I hope you can help me, this is my piece of code:

package com.company;

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

public class Main {

    public static void main(String[] args) {
        Scanner lector = new Scanner(System.in);
        File ruta = new File("C:\Users\Victor\Desktop");
        String comando = "";
        do {
            comando = lector.nextLine();
            switch (comando) {
                case "cd ..":
                    ruta = cedes(ruta);
                    break;
                case "ls":
                    ruta = eleses(ruta,comando);
                    break;
                case "ls -l":
                    ruta = eleses(ruta,comando);
                    break;
            }
        } while (!comando.equals("quit"));
    }

    public static File cedes(File ruta) {

        if (!ruta.getParent().equals("/")) {
            System.out.println(ruta.getParent());
            ruta = new File(ruta.getParent());
        }
        return ruta;
    }

    public static File eleses(File ruta, String comando) {
        if (comando.equals("ls")) {
            String[] lista = ruta.list();
            for (int i = 0; i < lista.length; i++) {
                System.out.println(lista[i]);
            }
            return ruta;
        }else if (comando.equals("ls -l")) {
            String[] lista2 = ruta.list();
            for (int i = 0; i < lista2.length; i++) {
                System.out.println(lista2[i] + " " + ruta.lastModified());
            }
        }return ruta;
    }
}