You have been asked to develop an application, which would create a student id for a new student using their name, age and year of enrolment. The application should ask the user to enter their name, age and the year of enrolment and then formulate the new student id beginning with the first and last letter of their name followed by the year of enrolment and finally two random digits between 0 to 9. For example, if a user enters John, 19, 2023 then the id number might be Jn19202347 where 4 and 7 are random numbers generated by the application. When one new student number has been printed, the app should ask the user would they like to create another, if the user answers yes, then the app should run again. • The application code should be suitably formatted and indented, appropriately commented to show your understanding, error free and should give appropriate output (30 marks) • The application should make use of instantiable classes. The instantiable class should contain appropriately declared data members, a suitable constructor, all necessary set and get methods and a suitable method to create the id number. The main class should declare all necessary variables and invoke all of the necessary methods of the instantiable class during input, processing and output.

Sure, I can help you with that. It seems like you want to develop an application that creates a student ID for a new student using their name, age, and year of enrollment. The ID number should begin with the first and last letter of their name followed by the year of enrollment and two random digits between 0 to 9. The application should be error-free and should make use of instantiable classes. The instantiable class should contain appropriately declared data members, a suitable constructor, all necessary set and get methods, and a suitable method to create the ID number. The main class should declare all necessary variables and invoke all of the necessary methods of the instantiable class during input, processing, and output.

To start with, let me explain the steps to create the application:

1. Define the instantiable class called "Student" with data members name, age, and yearOfEnrollment.
2. Define a constructor that initializes the data members.
3. Define set and get methods for the data members.
4. Define a method "createID()" that creates the student ID by following the given format.
5. In the main class, declare necessary variables to take input from the user.
6. Use the Scanner class to take input from the user and pass the input to the constructor of the "Student" class.
7. Invoke the "createID()" method to create the student ID.
8. Print the student ID on the console.
9. Ask the user if they want to create another student ID.
10. If the user answers yes, then repeat steps 5 to 9. Otherwise, exit the program.

Here's the code for the "Student" class:

public class Student {
    private String name;
    private int age;
    private int yearOfEnrollment;
    
    public Student(String name, int age, int yearOfEnrollment) {
        this.name = name;
        this.age = age;
        this.yearOfEnrollment = yearOfEnrollment;
    }
    
    public void setName(String name) {
        this.name = name;
    }
    
    public String getName() {
        return name;
    }
    
    public void setAge(int age) {
        this.age = age;
    }
    
    public int getAge() {
        return age;
    }
    
    public void setYearOfEnrollment(int yearOfEnrollment) {
        this.yearOfEnrollment = yearOfEnrollment;
    }
    
    public int getYearOfEnrollment() {
        return yearOfEnrollment;
    }
    
    public String createID() {
        String id = name.substring(0, 1) + name.substring(name.length() - 1) + yearOfEnrollment;
        int random1 = (int) (Math.random() * 10);
        int random2 = (int) (Math.random() * 10);
        id += random1 + "" + random2;
        return id;
    }
}

Here's the code for the main class:

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        
        do {
            System.out.print("Enter name: ");
            String name = sc.next();
            
            System.out.print("Enter age: ");
            int age = sc.nextInt();
            
            System.out.print("Enter year of enrollment: ");
            int yearOfEnrollment = sc.nextInt();
            
            Student student = new Student(name, age, yearOfEnrollment);
            String id = student.createID();
            System.out.println("Student ID: " + id);
            
            System.out.print("Do you want to create another student ID? (yes/no): ");
            String choice = sc.next();
            
            if (choice.equalsIgnoreCase("no")) {
                break;
            }
        } while (true);
        
        sc.close();
    }
}

I hope this helps you. Let me know if you have any further questions.