Re: Java Arrays.sort throws exception

From:
captain <madison223@gmail.com>
Newsgroups:
comp.lang.java.programmer
Date:
Wed, 14 May 2008 12:38:11 -0700 (PDT)
Message-ID:
<a9e0e62c-9b2a-41b1-ac87-b67078d13331@a1g2000hsb.googlegroups.com>
This is my very first post and I am not up on the etiquete yet.

I realize that the problem must be in my code. Actually, I didn't
right this code, I inherited it. I have a lot of programming
experience but not in this particular environment.

Here, a list is populated in a loop and then Collections.sort is
called on that list. I would like to know what the possible problems
may be, what to look for.

Thanks

On May 14, 2:57 pm, Eric Sosman <Eric.Sos...@sun.com> wrote:

captain wrote:

Eric,

Thank you very much for your response.

My code:
  List adminItems = new ArrayList();

  loop:
     adminItems.add(administeredItem);

  Collections.sort(adminItems);


     My code:

        import java.util.ArrayList;
        import java.util.Collections;

        public class Foo {

            public static void main(String[] unused) {
                final int COUNT = 2700;
                ArrayList<Integer> list = new ArrayList<=

Integer>(COUNT);

                for (int i = 0; i < COUNT; ++i)
                    list.add(new Integer(
                       (int)(Math.random() * Integ=

er.MAX_VALUE)));

                Collections.sort(list);
            }

        }

Runs like a champ, both as shown and with COUNT = 1000000.

     There's something I'd like you to notice, a difference between
your code and mine: Mine actually runs, while yours won't even
compile. I can get yours to compile and run by "filling in the
blanks," as it were -- but that probably means that the problem is
in the blanks, the part you still haven't revealed.

     Hint, hint.

--
Eric.Sos...@sun.com

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