develop an application to remove whitespaces from given text file using io stream Methods in java

 

Develop an application to remove whitespaces from given text file   using IOStream Methods

Problem Statement :

Write a program to remove whitespaces from a text file. Name of the file is given using

command line

Introduction

String trim()

This method returns a copy of the string, with leading and trailing whitespace omitted.

public String trim()

It returns a copy of this string with leading and trailing white space removed, or this string if it has no leading or trailing white space.

 

Program

import java.util.*;

import java.io.*;

class exp10

{

   public static void main(String args[])

   {

      FileReader fr ;

      BufferedReader br ;

      String ln;

      FileWriter fw;

      try

       {

          fr = new FileReader("aabbcc.txt");

          br = new BufferedReader(fr);

          fw = new FileWriter("xyz.txt");

         while((ln = br.readLine())!=null)

         {

             ln = ln.trim();

             if(!ln.equals(""))

             {

                fw.write(ln);

             }

         }

          fr.close();

          fw.close();

              }

       catch(IOException e)

       {

          System.out.println(e);

       }

   }

}