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  • What is collection in Java w3?

    Java Collection means a single unit of objects.
    Java Collection framework provides many interfaces (Set, List, Queue, Deque) and classes (ArrayList, Vector, LinkedList, PriorityQueue, HashSet, LinkedHashSet, TreeSet).

  • What are the Java programs based on collection framework?

    Ans: The Collection programs in java include several common data structures such as ArrayList, LinkedList, HashSet, TreeSet, HashMap, and TreeMap, to name a few.
    Each of these data structures has specific properties and uses.

  • What are the methods of collection utility class?

    The Collections class provides methods like synchronizedList(), synchronizedSet(), and synchronizedMap() to return synchronized (thread-safe) collections.
    These methods are useful in multi-threaded environments.

  • A Collection represents a group of objects known as its elements.
    The Collection interface is used to pass around collections of objects where maximum generality is desired.
    For example, by convention all general-purpose collection implementations have a constructor that takes a Collection argument.

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