Debug and fix the Java console application that uses 2 dimensional arrays but the application does not compile nor execute. Student enters only integers to select courses for registration from a menu. No data type validation of the user menu selection is checked or required. The program terminates only when the student closes it. No registration of other courses not displayed by the program . No registration more than once for the same course. No registration for more than 9 credit hours (e.g. no more than 3 courses). This program has 4 errors/bugs. Use these to test the outcome IT1006 IT4079 IT2230 Successful completion of this assignment will display a valid message or an invalid message, with reason, for the selected course code. In addition, the application should display and update current list of registered courses. Here is the code I have so far: package registerforcourse; import java.util.Scanner; public class RegisterForCourse { public static void main(String[] args) { // TODO code application logic here System.out.println("Register for classes"); Scanner input = new Scanner(System.in); // courses 2d array hold course code and their credit hours String[][] courses = { {"IT1006", "IT4782", "IT4789", "IT4079", "IT2230", "IT3345", "IT2249"}, {"6", "3", "3", "6", "3", "3", "6"} }; // validChoices 2d array holds valid number choices (as strings) selected by user // and their corresponding courses //e.g String[][] choices = { {"5", "IT2230"}, {"1", "IT1006"}, {"6", "IT3345"} }; String[][] validChoices = { {"", ""}, {"", ""}, {"", ""} }; int choice; int totalCredit = 0; String yesOrNo = ""; do { choice = getChoice(courses, input); switch (ValidateChoice(choice, validChoices, totalCredit, courses)) { case -1: System.out.println("**Invalid** - Your selection of " + choice + " is not a recognized course."); break; case -2: System.out.println("**Invalid** - You have already registerd for this " + courses[0][choice-1] + " course."); break; case -3: System.out.println("**Invalid** - You can not register for more than 9 credit hours."); break; case 0: System.out.println("Registration Confirmed for course " + courses[0][choice-1] ); totalCredit += Integer.parseInt(courses[1][choice-1]); if (validChoices[0][0].equals("")) { validChoices[0][0] = Integer.toString(choice); validChoices[0] = courses[0][choice-1]; } else if (validChoices[1][0].equals("")) { validChoices[1][0] = Integer.toString(choice); validChoices[1][1] = courses[0][choice-1]; } else if (validChoices[2][0].equals("")) { validChoices[2][0] = Integer.toString(choice); validChoices[2][1] = courses[0][choice-1]; } break; } WriteCurrentRegistration(validChoices, totalCredit); System.out.print(" Do you want to try again? (Y|N)? : "); yesOrNo = input.next().toUpperCase(); } while (yesOrNo.equals("Y")); System.out.println("Thank you for registering with us"); } //This method prints out the selection menu to the user in the form of //[selection number]Course Code (Course Credit Hours) //from the courses array one per line //and then prompts the use to make a number selection public static int getChoice(String[] courses, Scanner input) { System.out.println("Please type the number inside the [] to register for a course"); System.out.println("The number inside the () is the credit hours for the course"); for(int i = 0; i < courses[0].length; i++ ) System.out.println("[" + (i+1) + "]" + courses[0][i] + "(" + courses[1][i] + ")"); System.out.print("Enter your choice : "); return (input.nextInt()); } //This method validates the user menu selection //against the given registration business rules //it returns the following code based on the validation result // -1 = invalid, unrecognized menu selection // -2 = invalid, alredy registered for the course // -3 = invalid, No more than 9 credit hours allowed // 0 = menu selection is valid public static int ValidateChoice(int choice, String[][] validChoices, int totalCredit, String[][] courses) { String choiceAsString = Integer.toString(choice); if (choice < 1 || choice > 7) return -1; else if (choiceAsString.equals(validChoices[0][0]) || choiceAsString.equals(validChoices[]) || choiceAsString.equals(validChoices[2][0])) return -2; else if ( totalCredit + Integer.parseInt(courses[1][choice-1]) > 9) return -3; return 0; } //This method prints the current list of registered courses thus far //from the courses array separated by , and enclosed inside { } //It also prints the total credit registered for thus far public static void WriteCurrentRegistration(String[][] validChoices, int totalCredit) { if (validChoices[0][0].equals("")) System.out.println("Current course registration: { none } " ); else if (validChoices[1][0].equals("")) System.out.println("Current course registration: { " + validChoices[0][i] + " }" ); else if (validChoices[2][0].equals("")) System.out.println("Current course registration: { " + validChoices[0][1] + ", " + validChoices[1][1] + " }"); else System.out.println("Current course registration: { " + validChoices[0][1] + ", " + validChoices[1][1] + ", " + validChoices[2][1] + " }"); System.out.println("Current registration total credit = " + totalCredit); } } Expert Answer