Java tutorial
import java.util.ArrayDeque; import java.util.Deque; public class Main { public static void main(String[] args) { ArrayDeque<Integer> deque = new ArrayDeque<Integer>(8); deque.add(3); deque.add(1); deque.add(25); deque.add(1); // this will remove first occurrence of element 1 deque.removeFirstOccurrence(1); System.out.println(deque); } }