class CustomException extends Exception {
    public CustomException(String message) {
        super(message);
    }
}
 
public class CustomExceptionExample {
 
    public static void main(String[] args) {
        try {
            // Simulating a situation where the custom exception is thrown
            throwCustomException();
        } catch (CustomException e) {
            // Catching and handling the custom exception
            System.out.println("Caught CustomException: " + e.getMessage());
        }
    }
 
    // Method that throws the custom exception
    private static void throwCustomException() throws CustomException {
        // Simulating a condition that triggers the custom exception
        boolean errorCondition = true;
 
        if (errorCondition) {
            throw new CustomException("This is a custom exception message.");
        }
    }
}