Chapter 9, Problem 4PC

Program Plan Intro

Vowels and Consonants

Program Plan:

The details of “VowelConsCounter” class are shown below:

• In the “main()” method,
  • Declare the required variable.
  • Read the input from the user.
  • Create an object for Scanner class.
  • Create an object for VowelCons class.
  • The do...while loop executes until “e” character. If yes,
    • Get the user's selection and the assign into selection.
    • Match the selection case is “a”. If yes, call getNumVowels() method to display number of vowels and exit the loop.
    • Match the selection case is “b”. If yes, call getNumConsonants() method to display number of consonants and exit the loop.
    • Match the selection case is “c”. If yes, call getNumVowels() and getNumConsonants() method to display number of vowels and consonants and exit the loop.
    • Match the selection case is “d”. If yes, get another input from user.
• In the “getMenuSelection()” method,
  • Declare the required variables.
  • Create an object for Scanner class.
  • Display the menus to user.
  • Read the input selection from user.
  • The while loop executes until the input choice. If yes,
    • Display the error message.
  • Return the user choice.
• The details of “VowelCons” class is shown below:
  • Declare the variable to set a list of the vowels.
  • Declare the variable to set a list of the consonants.
  • Declare the required variables.
  • Define the parameterized constructor to call countVowelsAndCons() method.
  • Define the getNumVowels() method to return the number of vowels.
  • Define the getNumConsonants() method to return the number of consonants.
  • In the countVowelsAndCons() method,
    • The for loop executes until the length of vowels. If yes, determine the character at position is equal to vowels.
    • Check whether the character is not vowel. If yes, determine the character at position is equal to consonants.