How to Get attributes list from ArrayList of objects

Question

Suppose I have an object that looks like:

public class Obj {
String foo;
String bar;
}

If I create an arraylist of type Obj and populate it, is there a way I can return a list of all the objects in the array's foo attribute from the ArrayList?

EDIT: I should have been more clear, I did not want to do this via iteration

Answer 1

Try this:

Collection<String> names = CollectionUtils.collect(personList, TransformerUtils.invokerTransformer("getName"));  

Use apache commons collection api.