Custom Age Validation Exception

In this problem: You will create a custom exception class InvalidAgeException extending Exception, and an AgeValidator class with a validate(int age) method that throws this exception for ages below 0 or above 150. The Main class catches the exceptions using try-catch and displays the messages to standard output.

Learning Objective: Understand how to create custom exception classes and the throw-catch workflow

Overview

In Java, you can create custom exception classes by extending the Exception class. In this problem, you will build a validator that checks age values and throws a custom exception for invalid inputs.

Specifications

InvalidAgeException Class (InvalidAgeException.java)

• Extends Exception
• Constructor: InvalidAgeException(String message) calls super(message)

AgeValidator Class (AgeValidator.java)

• void validate(int age) throws InvalidAgeException
• If age < 0: Throw exception with message "Age cannot be negative: " + age
• If age > 150: Throw exception with message "Age cannot exceed 150: " + age
• For valid values: Print "Valid age: " + age

Main Class (Main.java)

• Create an AgeValidator instance
• Call validate(25) (normal case)
• Call validate(-5) (triggers exception)
• Call validate(200) (triggers exception)
• Wrap each call in a separate try-catch block, printing "Error: " + exception message in catch

Output Format

Valid age: 25
Error: Age cannot be negative: -5
Error: Age cannot exceed 150: 200