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

List list = (...);

//list may contain duplicates.

//remove duplicates if any
Set setItems = new LinkedHashSet(list);
list.clear();
list.addAll(setItems);

You may need to override "equals()" so that 2 elements are considered equals if they have the same subtitle (or tite and subtitle maybe ?)