Question

Write a program to assign a full path and file name as given below. Using library functions, extract and output the file path, file name and file extension separately as shown.
Input C: / Users / admin / Pictures / flower.jpg
Output path: C: / Users/admin/Pictures/
File name: flower
Extension: jpg

Answer 1

import java.io.*;
class fileaddress
{
    String pathname,filename,extensionname,path;
    public static void main ( ) throws IOException
    {
          InputStreamReader IR = new InputStreamReader (System.in);
          BufferedReader br = new BufferedReader (IR);
          System.out.println ("Enter the fullpath with filename and extension :");
          pathname = br.readLine ( );
          if (pathname.startsWith ("\") && pathname.ends With ("."))
          {
               int r = pathname.lostIndexOf("\");
               int s = pathname.indexOf(".");
               filename = pathname.substring (r + 1,s);
               extensionname = pathname.substring (s + 1);
               path = pathname.substring (0,r+1);
         }
         System.out.println ("Path :" + Path);
         System.out.println ("File Name : " + filename)
         System.out.println ("Extension :" + extensionname);
         }}

The variable description is as follows:

S.No.	Variable Name	Data type	Purpose
1.	pathname	string	to store full path name of file
2.	filename	string	to store file name
3.	extensionname	string	to store extension of file
4.	path	string	to store only pathname with file and extension name
5.	IR	—	for input stream reader
6.	br	—	for buffered reader
7.	r	int	to store position no. of string “/”.
8.	s	int	to store position number of string