The ArrayList doesn't implement Comparable. The Objects being stored in the ArrayList implement Comparable. If you don't want to do that, create a Comparator that does the same thing.
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Type: Posts; User: KevinWorkman
Re: Bubblesort of an ArrayList with objects
The ArrayList doesn't implement Comparable. The Objects being stored in the ArrayList implement Comparable. If you don't want to do that, create a Comparator that does the same thing.
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Re: Bubblesort of an ArrayList with objects
Huh? That's not at all how that method works. The sort() method is void, so it doesn't return anything. Did you read the API link I gave you?
Re: Bubblesort of an ArrayList with objects
What are you confused about? You have an ArrayList of Customers, right? So make a Comparator for Customer (or make the implement Comparable) that sorts them in whatever fashion you want.
Re: Bubblesort of an ArrayList with objects
Did you check out the API for Collections?
Collections (Java Platform SE 6)
Re: Bubblesort of an ArrayList with objects
Why don't you just use the Collections class and a Comparator?