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Thread: collections

  1. #1
    Junior Member
    Join Date
    May 2010
    Answers
    9

    collections

    pls tell the differences between arraylist and vectorlist.And difference between set and sortedset.and explain sortedset and hashset.pls i am totally confused on these topics.


  2. #2
    Junior Member
    Join Date
    Mar 2010
    Answers
    22

    Re: collections

    ArrayList:
    1.Its not synchronized and its performance is good compare to vector.
    2.It does not support legacy method such as(hasMoreElements,nextElement)
    3.It support only iterator.

    vector:
    1.Its synchronized.
    2.It support legacy method.
    3.It support both iterator and Enumeration.
    SortedSet:
    1.it cannot be instantiate.
    2.the output value is in ascending order.
    HashSet
    1.the output value is not in ascending order.


  3. #3
    Junior Member
    Join Date
    May 2010
    Answers
    7

    Smile Re: collections

    Vector is synchronized but ArrayList isn't.

    In SortedSet objects are stored sortedly ,but in Set objects aren't stored sortedly.

    In HashSet objects are stored by using hash table


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