List difference in java

Question

I have two ArrayList as follows:

original: 12, 16, 17, 19, 101

selected: 16, 19, 107, 108, 109

Answer 1

There is a new library available underscore-java. It can do difference and intersection for lists and arrays. Live example.

Code example:

List original = Arrays.asList(12, 16, 17, 19, 101);
List selected = Arrays.asList(16, 19, 107, 108, 109);
List add = U.difference(selected, U.intersection(original, selected));
List remove = U.difference(original, selected);