What is the purpose and main functions of collections in Java?

Collections in Java are designed for storing, managing, and processing groups of objects. The main functions of collections include:

• Storing a set of elements (objects) in a convenient structure.
• Providing various ways to access elements (e.g., by index, by key).
• Supporting operations such as adding, removing, searching, and sorting elements.
• Allowing efficient data management with different implementations (List, Set, Map, etc.), each optimized for specific tasks.

Example of using a List collection:

List<String> names = new ArrayList<>();
names.add("Ivan");
names.add("Maria");
System.out.println(names.get(0)); // Will output "Ivan"