Have you created your own exception for error handling in your projects?

Yes, in projects I often created custom exceptions for more precise error handling and improved code readability. This helps to highlight specific situations that standard exceptions do not cover.

For example, you can create an exception for data validation errors:

public class ValidationException extends Exception {
    public ValidationException(String message) {
        super(message);
    }
}

Then, in the code, you can throw and handle this exception separately:

if (input == null) {
    throw new ValidationException("Input data cannot be null");
}

This approach improves code support and debugging, and also allows for more flexible error handling logic.