Welcome to the Java Programming Forums


The professional, friendly Java community. 21,500 members and growing!


The Java Programming Forums are a community of Java programmers from all around the World. Our members have a wide range of skills and they all have one thing in common: A passion to learn and code Java. We invite beginner Java programmers right through to Java professionals to post here and share your knowledge. Become a part of the community, help others, expand your knowledge of Java and enjoy talking with like minded people. Registration is quick and best of all free. We look forward to meeting you.


>> REGISTER NOW TO START POSTING


Members have full access to the forums. Advertisements are removed for registered users.

Results 1 to 4 of 4

Thread: Array List help

  1. #1
    Junior Member
    Join Date
    Feb 2013
    Posts
    10
    Thanks
    1
    Thanked 0 Times in 0 Posts

    Default Array List help

    I have an array list of objects and I want to use them in a function call. I want to effectively do this:

    apples[i].function();

    but am unsure how to do this with an array list. Please help.


  2. #2
    Super Moderator Norm's Avatar
    Join Date
    May 2010
    Location
    Eastern Florida
    Posts
    25,139
    Thanks
    65
    Thanked 2,720 Times in 2,670 Posts

    Default Re: Array List help

    The posted code uses an element from an array of objects to call one of its method.
    The ArrayList class has methods to return references to an element it holds that can be used like the array referencing that uses an index(theArray[theIndex]). Call the ArrayList class's method to get the object reference and use that to call its method.
    If you don't understand my answer, don't ignore it, ask a question.

  3. #3
    Junior Member
    Join Date
    Feb 2013
    Posts
    10
    Thanks
    1
    Thanked 0 Times in 0 Posts

    Default Re: Array List help

    K. Thanks. Got it figured out. I was doing it right (not the way posted above), I was just missing a proper cast

  4. #4
    Super Moderator Norm's Avatar
    Join Date
    May 2010
    Location
    Eastern Florida
    Posts
    25,139
    Thanks
    65
    Thanked 2,720 Times in 2,670 Posts

    Default Re: Array List help

    If you use generics you should not have to use cast.
    If you don't understand my answer, don't ignore it, ask a question.

Similar Threads

  1. Converting Two dimensional array into an Array list
    By NewbieJavaProgrammer in forum Object Oriented Programming
    Replies: 11
    Last Post: September 29th, 2012, 04:23 PM
  2. Array List of Array Lists working for first item but not for second.
    By javapenguin in forum Collections and Generics
    Replies: 6
    Last Post: February 15th, 2012, 05:12 PM
  3. Array List
    By nadirkhan in forum Collections and Generics
    Replies: 6
    Last Post: September 9th, 2011, 09:39 AM
  4. Array List question
    By Demetrius82 in forum Java Theory & Questions
    Replies: 4
    Last Post: June 3rd, 2011, 10:28 AM
  5. Basic array list
    By Trunk Monkeey in forum What's Wrong With My Code?
    Replies: 5
    Last Post: January 24th, 2011, 11:51 AM