Alisha Aslam pathan

Spring Boot : Annotations

1. @Controller Annotation This annotation provides Spring MVC features. It is used to create Controller classes and it handles the HTTP requests. 2. @RequestMapping Annotation This annotation is used to map the HTTP requests with the handler methods inside the controller class. 3. @RestController Annotation This annotation is used to

Kotlin: Nullable Types

1.Safe Calls (?.) - If the object is null, the expression which is using the safe call operator will return null instead of throwing a - Null Pointer Exception. - It allows you to safely access properties or methods of an object that may be null. EXAMPLE OUTPUT EXAMPLE OUTPUT