Question

I would like to know if something like below is possible,

list.removeAll(namesToRemove)

I hope the context is understandable.

The list is of type ArrayList<MyObject> where MyObject has a getName method.

The namesToRemove is an ArrayList<String> containing names of the objects to be removed.

I know this can be achieved by overriding equals method in MyObject class. I would like to know if any other choice is present.

Answer 1

You can do something like this using Google Collections Collections2.filter():

final List<String> namesToKeep = getNamesToFilter();
List<MyObject> filtered = Collections2.filter(originalList, new Predicate<MyObject>() {
  @Override
  public boolean apply(MyObject o) {
    return namesToKeep.contains(o.getName());
  }
});