In Java, the List
interface is part of the java.util
package and provides an ordered collection that can contain duplicate elements. It’s implemented by several powerful classes, each with its own strengths:
✅ Common Implementation Classes of List
:
- ArrayList – Resizable array, great for fast random access and iteration.
- LinkedList – Doubly-linked list, ideal for frequent insertions and deletions.
- Vector – Synchronized version of ArrayList (considered legacy).
- Stack – A subclass of Vector that follows Last-In-First-Out (LIFO) behavior.
These classes all implement the List
interface and can be used interchangeably depending on your performance and concurrency needs.