a) isVowel() – returns true if the character is a vowel b) isConsonant() – returns true if the character is a consonant c) changeCase() – if the character is lower case then change it to upper case and if the character is in upper case then change it to lower case. Example output is given below: Enter a character a a is a vowel a is not a consonant a is equivalent to A Note: Java represents character using Unicode encoding and ‘A’ to ‘Z’ is represented by numbers 65 to 90 and ‘a’ to ‘z’ is represented by numbers 97 to 122. So to convert ‘A’ to ‘a’ you need to add (97-65) to A and then cast it to Character type since the addition will change its type to integer. You can use the following code to read a character from console. When you call charAt(i) method for any String it returns the character at index i. The index of first character is 0, the index of second character is 1 and so on. Scanner input = new Scanner(System.in); char ch =input.next().charAt(0); If you cannot pass the tests, please try following for troubleshooting: isVowel('e'); # should be True isVowel('d'); # should be False isConsonant('e'); # should be False isConsonant('d'); # should be True changeCase('c'); # should be 'C' changeCase('C'); # should be 'c' class Main { // Add your code below public static void main(String[] args) { } }

Programming Logic & Design Comprehensive

9th Edition

ISBN:9781337669405

Author:FARRELL

Publisher:FARRELL

Chapter9: Advanced Modularization Techniques

Section: Chapter Questions

Problem 9PE

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Question

Write a program that asks the user to enter a character. Then pass the character to the following methods.

a) isVowel() – returns true if the character is a vowel

b) isConsonant() – returns true if the character is a consonant

c) changeCase() – if the character is lower case then change it to upper case and if the character is in upper case then change it to lower case.

Example output is given below:

Enter a character

a is a vowel

a is not a consonant

a is equivalent to A

Note: Java represents character using Unicode encoding and ‘A’ to ‘Z’ is represented by numbers 65 to 90 and ‘a’ to ‘z’ is represented by numbers 97 to 122. So to convert ‘A’ to ‘a’ you need to add (97-65) to A and then cast it to Character type since the addition will change its type to integer.

You can use the following code to read a character from console. When you call charAt(i) method for any String it returns the character at index i. The index of first character is 0, the index of second character is 1 and so on.

Scanner input = new Scanner(System.in);

char ch =input.next().charAt(0);

If you cannot pass the tests, please try following for troubleshooting:

isVowel('e'); # should be True

isVowel('d'); # should be False

isConsonant('e'); # should be False

isConsonant('d'); # should be True

changeCase('c'); # should be 'C'

changeCase('C'); # should be 'c'

class Main {

// Add your code below
public static void main(String[] args) {

}
}

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