Java Queue Interface

The Queue interface in Java is used to hold elements before processing. It follows the FIFO (First In, First Out) principle.

Common Implementations

• LinkedList
• PriorityQueue
• ArrayDeque

Basic Example

Queue<String> queue = new LinkedList<>();
queue.add("A");
queue.add("B");
queue.add("C");

System.out.println(queue.poll()); // A