What is the difference between Java Collections and Lists?

What is the difference between Java Collections and Lists?

Java Collections is a framework that provides a set of classes and interfaces for storing and manipulating groups of objects. Lists are a specific type of collection that maintains an ordered sequence of elements.

Can you give me examples of different types of Lists in Java?

Sure! Common types of Lists in Java include ArrayList, LinkedList, and Vector. Each has its own characteristics and use cases.

When should I use ArrayList over LinkedList?

Use ArrayList when you need fast random access to elements, as it provides O(1) time complexity for get operations. Use LinkedList when you need to frequently add or remove elements from the beginning or middle of the list, as it provides O(1) time complexity for those operations.

Are there any performance considerations I should be aware of?

Yes, performance can vary based on the operations you perform. For example, ArrayList has better performance for accessing elements, while LinkedList excels in insertions and deletions.