Final answer:
Java code with three classes and custom exceptions includes scenarios such as a banking system, online library, and registration system, each with its custom exception, such as InsufficientFundsException, BookNotFoundException, and InvalidUserDetailsException.
Step-by-step explanation:
Creating a Java code with three classes and custom exceptions can be a valuable learning experience. Let's consider three scenarios: a banking system with a custom exception for insufficient funds, an online library system with a custom exception for book not found, and a registration system with a custom exception for invalid user details. Each scenario will demonstrate class creation, exception handling, and the use of custom exceptions.
Example Code Snippet (InsufficientFundsException):
public class InsufficientFundsException extends Exception {
public InsufficientFundsException(String message) {
super(message);
}
}
In the respective classes (BankAccount, Book, and User), we will implement methods that throw these exceptions when certain conditions are not met, for example, a withdrawal that exceeds the account balance, trying to borrow a book that is not in the library's catalog, or entering invalid registration details.
Note that the requirements for a cover page, flowchart, and screenshots of the code are beyond the scope of this answer and typically involve using a word processor for documentation and a developmental environment like Eclipse to write and run the code. Your final assignment submission should include these elements following the guidelines provided by your educational instruction.