Kira9204

The `@NotNull` annotation from Jakarta Bean Validation (formerly Javax Validation) and the `@NonNull` annotation from Lombok serve similar but distinct purposes in Java development. Here's a breakdown of the key differences:

### 1. **Purpose and Usage**

- **Jakarta `@NotNull`**:
  - **Purpose**: It is a validation constraint used primarily in Java EE or Spring applications to enforce that a particular field or method parameter should not be `null`.
  - **Usage**: Typically used on fields, method parameters, or method return types. It is part of the Bean Validation API, which means it's used in contexts where objects are validated, such as when data is being processed by a framework like Spring or Hibernate.
  - **Effect**: Triggers a validation error if the annotated element is `null`, often used in combination with a validation framework that checks these constraints at runtime.
  
  ```java