Question

Problem Description:

Write a program that prompts the user to enter a directory and displays the number of the files in the directory.

Analysis:

(Describe the problem including input and output in your own words.)

Design:

(Describe the major steps for solving the problem. How do you use recursion to solve this problem.)

Coding: (Copy and Paste Source Code here. Format your code using Courier 10pts)

Name the public class Exercise18_29

Testing: (Describe how you test this program)

Answer 1

Answer) **No specific coding language mentioned, hence providing the Answer in Java.**

Code:

import java.io.File;
import java.util.Scanner;

//GetFiles Class
public class GetFiles {
   public static void main(String[] args) {
       //scanner instance to take input from user in console
       Scanner sc=new Scanner(System.in);
       System.out.println("Enter path : ");
       //taking input
       String path=sc.next();
      
       //calling getFileInPath() method to get the number of files in the path and print it.
       System.out.println("No. of files in path -- "+path+" is : "+getFilesInPath(path));

       //closing scanner instance
       sc.close();
   }
   //private static method to get number of files in a given path
   private static int getFilesInPath(String path) {
       //new File(path) returns a directory,
       //.list returns a Array of Strings for each file in the path,
       //.length return the length of the array
       return new File(path).list().length;
   }
}

Output:

Enter path :
C:\sd
No. of files in path -- C:\sd is : 4