Scan Directory

import java.util.*;
import java.io.*;
 
public class Directory {
 
    private String name;
 
    public Directory() {
        this(".");
    }
 
    public Directory(String name) {
        this.name = name;
    }
 
    public Vector<FileInfo> scanDir() throws IOException {
        return scanDir(new File("."));
    }
 
    public Vector<FileInfo> scanDir(String name) throws IOException {
        return scanDir(new File(name));
    }
 
    private Vector<FileInfo> scanDir(File dir) throws IOException {
        if(!dir.exists())
            throw new IOException("La cartella non esiste");
 
        Vector<FileInfo> elenco = new Vector<FileInfo>();
        for (File file : dir.listFiles()) {
            if (file.isFile())
                elenco.addElement(new FileInfo(file.getName(), file.getParent(), file.length()));
            else if (file.isDirectory())
                elenco.addAll(scanDir(file));
        }
        return elenco;
    }
 
    public static void main(String[] args) throws IOException {
        Scanner input = new Scanner(System.in);
 
        System.out.println("Inserire il nome della directory da analizzare (premere BARRA SPAZIO se si vuole analizzare tutta la directory): ");
        String nameOfDir = input.nextLine();
        Directory a;
 
        if(nameOfDir.equals(" ")) {
            a = new Directory();
            for(FileInfo info : a.scanDir()){
                System.out.println(info);
                System.out.println("");
            }
        }  else {
            a = new Directory(nameOfDir);
            for(FileInfo info : a.scanDir(nameOfDir)){
                System.out.println(info);
                System.out.println("");
            }
        }
 
 
    }
}
 
class FileInfo {
 
    private String name;
    private String dir;
    private long dimensione;
 
    public FileInfo(String name, String dir, long dim) {
        this.name = name;
        this.dir = dir;
        dimensione = dim;
    }
 
    public String toString() {
	    return "Nome: " + name + "\nPath: " + dir + "\nDimensione: " + dimensione + " byte";
	}
 
}