Remove duplicates from ArrayLists

Question

I have an ArrayList of custom objects. I want to remove duplicate entries.

The objects have three fields: title, subtitle, and id. If a su

Answer 1

I would suggest using a Set

http://download.oracle.com/javase/6/docs/api/java/util/Set.html

Which by its nature cannot contain duplicate items. You can create a new set from your original ArrayList using

Set myset = new HashSet(myArrayList);

Alternatively, just use a Set from the start, and don't use an ArrayList as it is not performing the function that you require.