file mais dernier marche pas

DEV3.2/Files/chaine/FileChainee.java

@@ -0,0 +1,78 @@
+import java.util.AbstractQueue;
+import java.util.Iterator;
+import java.util.NoSuchElementException;
+import java.util.Queue;
+
+public class FileChainee<E> extends AbstractQueue<E> implements Queue<E> {
+    private static class Node<E> {
+        E data;
+        Node<E> next;
+
+        Node(E data) {
+            this.data = data;
+        }
+    }
+
+    private Node<E> head; // Premier élément de la file
+    private Node<E> tail; // Dernier élément de la file
+    private int size = 0; // Taille de la file
+
+    @Override
+    public boolean offer(E element) {
+        Node<E> newNode = new Node<>(element);
+        if (head == null) {
+            tail = newNode;
+        } else {
+            newNode.next = head;
+        }
+        head = newNode;
+        size++;
+        return true;
+    }
+
+    @Override
+    public E poll() {
+        if (isEmpty()) {
+            return null;
+        }
+        E data = head.data;
+        head = head.next;
+        if (head == null) {
+            tail = null;
+        }
+        size--;
+        return data;
+    }
+
+    @Override
+    public E peek() {
+        return (head == null) ? null : head.data;
+    }
+
+    @Override
+    public Iterator<E> iterator() {
+        return new Iterator<>() {
+            private Node<E> current = head;
+
+            @Override
+            public boolean hasNext() {
+                return current != null;
+            }
+
+            @Override
+            public E next() {
+                if (!hasNext()) {
+                    throw new NoSuchElementException();
+                }
+                E data = current.data;
+                current = current.next;
+                return data;
+            }
+        };
+    }
+
+    @Override
+    public int size() {
+        return size;
+    }
+}