[BAEL-6810] - Sequenced Collections in Java 21

2023-08-30 19:58:17 +03:00
parent 05ca686833
commit 21176bb975
5 changed files with 75 additions and 0 deletions
@@ -0,0 +1,15 @@
+package com.baeldung.sequenced.collections;
+
+/*
+interface SequencedCollection<E> extends Collection<E> {
+    // new method
+    SequencedCollection<E> reversed();
+    // methods promoted from Deque
+    void addFirst(E);
+    void addLast(E);
+    E getFirst();
+    E getLast();
+    E removeFirst();
+    E removeLast();
+}
+ */
@@ -0,0 +1,18 @@
+package com.baeldung.sequenced.collections;
+
+/*
+interface SequencedMap<K,V> extends Map<K,V> {
+    // new methods
+    SequencedMap<K,V> reversed();
+    SequencedSet<K> sequencedKeySet();
+    SequencedCollection<V> sequencedValues();
+    SequencedSet<Entry<K,V>> sequencedEntrySet();
+    V putFirst(K, V);
+    V putLast(K, V);
+    // methods promoted from NavigableMap
+    Entry<K, V> firstEntry();
+    Entry<K, V> lastEntry();
+    Entry<K, V> pollFirstEntry();
+    Entry<K, V> pollLastEntry();
+}
+ */
@@ -0,0 +1,7 @@
+package com.baeldung.sequenced.collections;
+
+/*
+interface SequencedSet<E> extends Set<E>, SequencedCollection<E> {
+    SequencedSet<E> reversed();    // covariant override
+}
+ */