What is the difference between arraylist and linked list What are different types of annotations used in spring boot What is lambda expression?

Question

Accepted Answer

ArrayList and LinkedList are both data structures used to store and manipulate collections of objects in Java.

ArrayList is implemented as a resizable array, while LinkedList is implemented as a doubly linked list.
ArrayList provides constant time access to elements using their index, while LinkedList provides constant time insertion and deletion of elements.
Spring Boot annotations include @Controller, @Service, @Repository, @Autowired, @RequestMapping, and more.
Lambda expressions are a feature introduced in Java 8 that allow for functional programming by enabling the passing of behavior as an argument to a method.
Lambda expressions are written using the syntax (parameters) -> expression or (parameters) -> { statements; }.

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