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Java 21 Collection Framework features Interview questions

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List the collection classes that implement SequencedSet in Java 21? How do you apply reversed() to a List in Java 21? Define encounter order in the context of Sequenced Collections? List the collection classes that implement SequencedCollection in Java 21? What are putFirst() and putLast() in SequencedMap? How do you use getFirst() and getLast() on an ArrayList in Java 21? What is the SequencedSet interface? What is the purpose of the reversed() method in Java 21 collections? What are addFirst() and addLast() used for? What are removeFirst() and removeLast() used for? List the collection classes that implement SequencedMap in Java 21? What are firstEntry() and lastEntry() in SequencedMap? What are pollFirstEntry() and pollLastEntry()? Describe the sequencedKeySet(), sequencedValues(), and sequencedEntrySet() methods? What is the Sequenced Collections feature introduced in Java 21? What is the SequencedCollection interface? What is the SequencedMap interface? What are the new methods added by the SequencedCollection interface? What are getFirst() and getLast() used for? How do you use putFirst() on a LinkedHashMap?

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