1. A programming method designed to perform a specific, general-purpose task that can be reused across different parts of an application or in multiple applications
The StringUtils class contains several utility methods for string manipulation.
A classe StringUtils contém vários métodos utilitários para manipulação de strings.
2. A helper function that encapsulates commonly needed operations to promote code reuse and reduce redundancy
I created a utility method to validate email addresses across the entire application.
Criei um método utilitário para validar endereços de email em toda a aplicação.