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Java Generics and Collections Maurice Naftalin Maurice, Philip Wadler
Publisher: O'Reilly Media

Today at work a co-worker came up with an interesting question related to a warning related to unchecked types when using Collections.sort under Java 5. Suppose you have Java classes The answer to this riddle is that Java is designed to work with all kinds of generic classes, not just those which are collection-like. The most popular usage of generics is undoubtedly the Java SE Collection utilities. In Java, you will find Collection API's extensively uses generics as they are meant to contain any type of classes so it has to be generic in nature. Arrays behave differently from the collections because arrays are covariant by default, which means that S[] is a subtype of T[] whenever S is a subtype of T, where as Generics does not support covariance. Lets see the anatomy of List interface defined in java.util package:. Java Generics and Covariance/Contravariance. This second program on stack creates generics stacks storing all ints, doubles, chars and strings. Download Free eBook:Java Generics and Collections - Free chm, pdf ebooks rapidshare download, ebook torrents bittorrent download. The common case for Java generics involves being able to write type-safe algorithms which can be applied to any appropriate data-type. Collections.Generic; using System.Collections.ObjectModel; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { List listOfDates = GetSomethingOf, DateTime>(); Console. Java 5 enhanced for loop is used to print the elements.