Question

You have been asked to develop an application that accepts a sentence from the user and calculates and displays the number of vowels, consonants and spaces in that sentence. The application should run once and then ask the user if they would like to run it again. NB. The only acceptable characters are space, vowels and consonants. You are not expected to code for this. It is relevant only when testing the application. Your application should be developed using instantiable classes and should make use of the JOptionPane class for input and output. Save your instantiable class as Counting.java

Answer 1

Given below is the code for the question. Please do rate the answer if it helped. Thank you.

Counting.java
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import javax.swing.JOptionPane;

public class Counting {
   private String sentence;
   private int vowels;
   private int consonants;
   private int spaces;
   public Counting(String s) {
       sentence = s;
       countVowels();
       countConsonants();
       countSpaces();
   }
  
   public String getStats() {
       String s = "Vowels: " + vowels + "\n"
               +"Consonants: " + consonants + "\n"
               + "Spaces: " + spaces;
       return s;
   }
  
   private void countVowels() {
       vowels = 0;
       for(int i = 0; i < sentence.length(); i++) {
           char c = sentence.charAt(i);
           if(c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u' ||
                   c == 'A' || c == 'E' || c == 'I' || c == 'O' || c == 'U')
               vowels++;
       }
   }
  
   private void countConsonants() {
       consonants = 0;
       for(int i = 0; i < sentence.length(); i++) {
           char c = sentence.charAt(i);
           if(!(c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u' ||
                   c == 'A' || c == 'E' || c == 'I' || c == 'O' || c == 'U' ||
                   c == ' ' || c == '\t' || c == '\n'))
                   consonants++;
       }
   }
  
   private void countSpaces() {
       spaces = 0;
       for(int i = 0; i < sentence.length(); i++) {
           char c = sentence.charAt(i);
           if(c == ' ' || c == '\t' || c == '\n')
               spaces++;
       }
   }
   public static void main(String[] args) {
           String input = JOptionPane.showInputDialog("Enter a sentence");
           Counting c = new Counting(input);
           JOptionPane.showMessageDialog(null, c.getStats());
   }
}