UniversityStringValidator.java

import java.util.Scanner;

// 1. Define the Custom Exception
class NoMatchFoundException extends Exception {
    public NoMatchFoundException(String message) {
        super(message); // Pass the custom message to the parent Exception class
    }
}

// 2. Main Driver Class (PascalCase)
public class UniversityStringValidator {
    
    // Method that validates the string and declares that it throws our custom exception
    public static void checkString(String input) throws NoMatchFoundException {
        // Check if the string is NOT equal to "University" (Case-sensitive)
        if (!input.equals("University")) {
            throw new NoMatchFoundException("Error: The provided string is not equal to 'University'.");
        } else {
            System.out.println("Success! The string perfectly matches 'University'.");
        }
    }

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

        System.out.println("--- University String Validator ---");
        System.out.print("Please enter a string: ");
        String userInput = scanner.nextLine();

        System.out.println("\n--- Validation Result ---");
        
        // 3. Use try-catch block to handle the custom exception
        try {
            checkString(userInput);
        } catch (NoMatchFoundException e) {
            // This block executes if the exception is thrown
            System.out.println("Caught Custom Exception: " + e.getMessage());
        } finally {
            System.out.println("-------------------------");
            System.out.println("Validation process completed.");
        }

        scanner.close();
    }
}