Write a program to accept a string as command line argument and check whether it is a file or directory.

Write a program to accept a string as command line argument and check whether it is a file or

directory. If it is a directory, list the contents of the directory, count how many files the

directory has and delete all files in that directory having extension .txt. (Ask the user if the

files have to be deleted). If it is a file, display all information about the file (path, size,

attributes etc).

 Ex5seta1.java 

import java.io.*;

import java.util.*;

class Ex5seta1

{

    public static void main(String args[])

    {

        String fname=args[0];

Scanner sc=new Scanner(System.in);

        File f = new File(fname);

        int num=0;

        if(f.isDirectory())

        {

            System.out.println("Given file "+fname+"is  directory :");

            System.out.println("List of files are : ");

            String s[] = f.list();

            for(int i=0; i<s.length; i++)

            {

                File f1 = new File(fname, s[i]);

                if(f1.isFile())

                {

                    num++;

                    System.out.println(s[i]);     

                }   

                else System.out.println("\n"+s[i]+" is a sub directory");

            }

            System.out.println("\nNumber of files are: "+num);

    System.out.println("Are you want to delete a file : 1/0");

int c=sc.nextInt();

if(c==1)

{

System.out.println("List of files are : ");

            String s1[] = f.list();

            for(int i=0; i<s1.length; i++)

            {

                File f1 = new File(fname, s[i]);

                 if(f1.isFile() && s1[i].endsWith(".txt"))

                {

f1.delete();

                    System.out.println(s1[i] + " deleted");  num--;   

                }   

               

            }

System.out.println("\nNumber of files are: "+num);

}

        }

        else

        {

            if(f.exists())

            {

                System.out.println("\n"+fname+" is a File");

                System.out.println("Details of "+fname+" are : ");

                System.out.println("Path of file is "+f.getPath());

                System.out.println("Absolute Path of file is "+f.getAbsolutePath());

                System.out.println("Size of file is "+f.length());

            }

            else System.out.println(fname+" file is not present ");

        }

    }

}