Android How to Program, 3/e

J.18 Wrap-Up

In this appendix, you used classes ArrayList and LinkedList, which both implement the List interface. You used several predefined methods for manipulating collections. Next, you learned how to use the Set interface and class HashSet to manipulate an unordered collection of unique values. We discussed the SortedSet interface and class TreeSet for manipulating a sorted collection of unique values. You then learned about Java’s interfaces and classes for manipulating key/value pairs—Map, SortedMap, HashMap and TreeMap. We discussed the Collections class’s static methods for obtaining unmodifiable and synchronized views of collections.

Next, we introduced fundamental concepts of file and stream processing and overviewed object serialization. ...