Question

Write a program to accept a word and convert it into lowercase if it is in uppercase and display the new word by replacing only the vowels with characters following it using scanner class ,example:computer=cpmpvtfr (in java)

Answer 1

import java.util.Scanner;
public class StringOp
{
    public static void main(String[] args)
    {
        Scanner sc = new Scanner(System.in);
        
        System.out.print("Enter the word: ");
        String str = sc.next();  //str stores original input
        
        str = str.toLowerCase();  //str is now converted to Lower Case
        
        /* ASCII CODES LIST:
         * a - 97
         * e - 101
         * i - 105
         * o - 111
         * u - 117
         */
        
        String newstr = "";   //newstr is the New String. It will store the modified word
        
        for(int i=0;i<str.length();i++)
        {
            int ch = (int)str.charAt(i);   //ch is the ASCII value of each character of str
            if((ch==97)||(ch==101)||(ch==105)||(ch==111)||(ch==117))  //Condition for checking if ch corresponds to a vowel
            {
                ch++;
                newstr += (char)ch;
            }
            else
            {
                newstr += (char)ch;
            }
        }
        
        
        System.out.println("New String: "+newstr);
    }
}

Answer 2

Answer:

import java.util.*;

public class Lowercase

{

   public static void main()

   {

       Scanner in = new Scanner(System.in);

       System.out.print("Enter a word: ");

       String st = in.nextLine();

       st = st.toLowerCase();

       String newSt = "";

       int l = st.length();

       for (int i = 0; i < l; i++)

       {

           char ch = st.charAt(i);

           if (st.charAt(i) == 'a' ||

           st.charAt(i) == 'e' ||

           st.charAt(i) == 'i' ||

           st.charAt(i) == 'o' ||

           st.charAt(i) == 'u')

           {

               char nextC = (char)(ch + 1);

               newSt = newSt +  nextC;

           }

           else

           {

              newSt = newSt + ch;

           }

       }

       System.out.println(newSt);

   }

}

Explanation: