Manipulation Of Words In A String Using BlueJ

In this program, user will enter one sentence which may be of odd or even number of words. The program is to take the words from extreme sides of the string and generate a new string.

import java.util.*;

import java.io.*;

class Str

{

 String s1,s3;

 String ss1[];

 int m,i,j;

 BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

 StringTokenizer stk;

  public void takeString()throws Exception

 {

  System.out.println("Enter the string:");

  s1=br.readLine();

 }

 public void show()

 {

 m=0;

  stk=new StringTokenizer(s1);

  ss1=new String[stk.countTokens()];

  while(stk.hasMoreTokens())

  {

   ss1[m++]=stk.nextToken();

  }

  s3="";

   i=0;

  j=m-1;

  while(i< m)
  {

   s3=s3+ " "+ss1[i]+ " "+ ss1[j];

   i++;

   j--;

   }

   if(i==j)

   {

   s3=s3+ " "+ ss1[i];

   }

   System.out.println("The modified string="+s3);

   }

   public static void main(String args[])throws Exception

   {

   Str ob=new Str();

   ob.takeString();

   ob.show();

   }

   }

Related Post: BlueJ Programs on String/Sentence

Details about the program

The string is taken and the string is converted into tokens using StringTokenizer class. According to the number of tokens in the sentences, one string type array object is created to store the tokens. Using a while loop, the tokens from extreme positions are appended in a string object.

Sample input and output

Enter the string: This is a test

The modified string= This test is a

Enter the first string: This is a test on odd number of words

The modified string= This words is of a number test odd on