/home/caleb/ASDV-Java/Assignments/Lab10_CalebFontenot/src/lab10_calebfontenot/CharacterClassStringClass.java

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    package lab10_calebfontenot;

    import java.util.Scanner;

    /**
     *
     * @author caleb
     */
    public class CharacterClassStringClass {

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

            // Declare variables
            String userResponse;
            boolean loopToggle = true;
            int parseCheck;

            // While loop
            while (loopToggle) {
                System.out.println("Continue looping?");
                System.out.println("Please enter y/n or yes/no: ");
                userResponse = input.next();

                if (userResponse.toLowerCase().charAt(0) == 'y') {
                    if (userResponse.length() > 1) { // User has entered a string that starts with y
                        // Check if string == yes
                        if (userResponse.toLowerCase().equals("yes")) {
                            System.out.println("You typed '" + userResponse + '\'');
                            System.out.println("ok!");
                        } else {
                            System.out.println("Invalid input! You entered '" + userResponse + '\'');
                        }
                    } else {
                        // User has responded with 'y'
                        System.out.println("You typed '" + userResponse + '\'');
                        System.out.println("ok!");
                    }
                } else if (userResponse.toLowerCase().charAt(0) == 'n') {
                    if (userResponse.length() > 1) { // User has entered a string that starts with y
                        // Check if string == yes
                        if (userResponse.toLowerCase().equals("no")) {
                            System.out.println("You typed '" + userResponse + '\'');
                            // Kill the loop.
                            loopToggle = false;
                        } else {
                            System.out.println("Invalid input! You entered '" + userResponse + '\'');
                        }
                    } else {
                        // User has responded with 'n'
                        System.out.println("You typed " + userResponse.charAt(0));
                        // Kill the loop.
                        loopToggle = false;
                    }
                } else { // Invalid input handling
                    // Attempt to parse string as an integer.
                    try {
                        parseCheck = Integer.parseInt(userResponse);
                        // If it got past this, the user entered a number.
                        System.out.println("Invalid input! You entered " + parseCheck + ", which is an integer!");
                    } catch (NumberFormatException ex) {
                        if (!(userResponse.length() > 1)) { // Condition is true if response is a char.
                            System.out.println("'" + userResponse + "' is an incorrect character!");
                        } else { // Response is a string.
                            System.out.println("'" + userResponse + "' is too long!");
                        }
                    }

                }

            }

        }
    }