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Java - ArrayList - Quick Question

  • 08-01-2008 4:02pm
    #1
    AARRRGH
    Closed Accounts Posts: 12,382 ✭✭✭✭


    Hello

    I hope someone can help me with this.

    I have an ArrayList.

    I execute the code -

    myArrayList.add(x)
    myArrayList.add(y)

    - so x is added before y.

    What would myArrayList.get(0) retrieve? x or y?

    Basically I would like to be able to retrieve whichever element was added first without having to specify a direct position such as 0 or 1.

    Is this possible?

    Thank you. :)


Comments

  • #2
    nialo
    Registered Users, Registered Users 2 Posts: 610 ✭✭✭nialo


    it would retreive x.

    look at the api to find out more about arraylist
    http://java.sun.com/j2se/1.5.0/docs/api/

    myArrayList.get(myArrayList.indexOf(x));

    that would retrieve without specifing position. but requires you to know which element you added first!


  • #3
    Webmonkey
    Registered Users, Registered Users 2 Posts: 9,579 ✭✭✭Webmonkey


    Yeah thats right, it will load the first element (position 0). IE first element received.


  • #4
    AARRRGH
    Closed Accounts Posts: 12,382 ✭✭✭✭AARRRGH


    Great, thanks Nialo and Webmonkey.


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