BlueJ Program On Changing The Vowel Characters With * In A Sentence

This is a string manipulation BlueJ Program. User will enter any sentence and our BlueJ Program will change all occurrence of vowels (if present) with character '*'. 

import java.util.*;

class Search

{

    int i,len;

    String str1,str2="";

    Scanner sc=new Scanner(System.in);

public void take()

{    

    System.out.print("\nEnter the sentence: ");

     str1=sc.nextLine();        

 }

    public void show()

    {

        char ch;

        len=str1.length();

        for(i=0;i< len;i++)

        {

             ch=str1.charAt(i);

             switch(ch)

             {

                  case 'A':

                  case 'a':

                  case 'E':

                  case 'e':

                  case 'I':

                  case 'i':

                  case 'O':

                  case 'o':

                  case 'U':

                  case 'u':

                  ch='*';

                }

                str2=str2+ch;

            }

        

        System.out.println("\nModified Sentence: "+str2);

    }

      

    public static void main(String args[])

    {

        Search ob=new Search();

        ob.take();

        ob.show();

   }

 }

Related Post: BlueJ Programs on String/Sentence