Criação de arquivo e subpasta no JAVA

galera estou fazendo uma aplicação para cria uma subpasta e dentro dessa subpasta gravar um determinado arquivo.csv o código não mostra nenhum erro, mas na hora de compilar aparece o seguinte erro :
Enter a path
D:\\\\\\\\temp
Exception in thread "main" java.io.FileNotFoundException: D:\\\\\\\\temp (Acesso negado)
at java.io.FileInputStream.open0(Native Method)
at java.io.FileInputStream.open(Unknown Source)
at java.io.FileInputStream.<init>(Unknown Source)
at java.io.FileInputStream.<init>(Unknown Source)
at java.io.FileReader.<init>(Unknown Source)
at application.Program.main(Program.java:36)



Segue o código abaixo


package application;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.text.ParseException;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import java.util.Scanner;

import entites.Product;

public class Program {

public static void main(String[] args) throws ParseException, IOException, Exception {

Locale.setDefault(Locale.US);
Scanner sc = new Scanner(System.in);

List <Product> list = new ArrayList<>();

System.out.println("Enter a path");
String sourceFileStr = sc.nextLine();

File sourceFile = new File(sourceFileStr);
String sourceFolderStr = sourceFile.getParent();
//Cria a pasta
boolean success = new File (sourceFolderStr+"\\\\\\\\\\\\\\\\out").mkdir();

String targetFileStr = sourceFolderStr + "\\\\\\\\\\\\\\\\out\\\\\\\\\\\\\\\\sumary.csv";

try (BufferedReader br = new BufferedReader(new FileReader(sourceFileStr))){
String itemCSV = br.readLine();
while (itemCSV != null) {
String [] fields = itemCSV.split(",");
String name = fields[0];
double price = Double.parseDouble(fields[1]);
int quantity = Integer.parseInt(fields[2]);

list.add(new Product(name, price, quantity));
itemCSV = br.readLine();

}

try (BufferedWriter bw = new BufferedWriter(new FileWriter(targetFileStr))){
for (Product item : list ) {
bw.write(item.getName() + "," + String.format("%.2f", item.total()));
bw.newLine();
}
System.out.println(targetFileStr+"Created");
}
catch (IOException e ) {
System.out.println("Error Write File: "+ e.getMessage());
}
sc.close();
}

}

}
Código da classe entites criado abaixo

package entites;

public class Product {

private String name;
private Double price;
private Integer quantity;


public Product(String name, Double price, Integer quantity) {
super();
this.name = name;
this.price = price;
this.quantity = quantity;
}


public String getName() {
return name;
}


public void setName(String name) {
this.name = name;
}


public Double getPrice() {
return price;
}


public void setPrice(Double price) {
this.price = price;
}


public Integer getQuantity() {
return quantity;
}


public void setQuantity(Integer quantity) {
this.quantity = quantity;
}

public double total() {
return price * quantity;
}


}