Java if statement count vowels and consonants

Question

Letters A, E, I, O, and U are the vowels.

We would like to write a program that prompts the user to enter a string

Display the number of vowels and consonants in the string. 


import java.util.Scanner;

public class Main {
  public static void main(String[] args) {
    Scanner input = new Scanner(System.in);

    // Prompt the user to enter a string
    System.out.print("Enter a string: ");
    String string = input.nextLine();

    int vowels, // Count the number of vowels
        consonants; // Count the number of consonants
    vowels = consonants = 0; // Initialize accumulators to 0

    // Count the number of vowels and consonants
    /*  ww w.  ja  v  a 2s  .  c  o m*/
    //your code here
  }
}



import java.util.Scanner;

public class Main {
  public static void main(String[] args) {
    Scanner input = new Scanner(System.in);

    // Prompt the user to enter a string
    System.out.print("Enter a string: ");
    String string = input.nextLine();

    int vowels, // Count the number of vowels
        consonants; // Count the number of consonants
    vowels = consonants = 0; // Initialize accumulators to 0

    // Count the number of vowels and consonants
    for (int i = 0; i < string.length(); i++) {
      if (Character.isLetter(string.charAt(i))) {
        if (Character.toUpperCase(string.charAt(i)) == 'A' || 
            Character.toUpperCase(string.charAt(i)) == 'E' || 
            Character.toUpperCase(string.charAt(i)) == 'I' || 
            Character.toUpperCase(string.charAt(i)) == 'O' || 
            Character.toUpperCase(string.charAt(i)) == 'U') {
          vowels++;
        } else
          consonants++;
      }

      // Display results
      System.out.println("The number of vowels is " + vowels);
      System.out.println("The number of consonants is " + consonants);
    }
  }
}

Note

The following code uses OR operators. 

import java.util.Scanner;

public class Main {
  public static void main(String[] args) {
    Scanner input = new Scanner(System.in);
    System.out.print("Enter a string: ");
    String entry = input.nextLine().toLowerCase();

    int vowelCount = 0;
    int consonantCount = 0;

    for (int i = 0; i < entry.length(); i++) {
      char c = entry.charAt(i);
      if (isVowel(c)) { vowelCount++; }
      else if (isConsonant(c)) { consonantCount++; }
    }//from ww  w.j a  v  a2  s  .  c  om

    System.out.println("The number of vowels is " + vowelCount);
    System.out.println("The number of consonants is " + consonantCount);
  }

  private static boolean isVowel(char c) {
    boolean vowel = false;
    if (c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u') {
      vowel = true;
    }
    return vowel;
  }

  private static boolean isConsonant(char c) {
    boolean consonant = false;
    if (!isVowel(c) && Character.isLetter(c)) {
      consonant = true;
    }
    return consonant;
  }
}



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