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

That was the approach used by C# when generics were introduced, but Java did not take this approach because of the huge amount of pre-existing Java code using collections. The most popular usage of generics is undoubtedly the Java SE Collection utilities. Martijn Verburg says: April 17, 2013 at 4:36 pm. In the first one, generics is not used. In this program, it is impossible for the compiler to know what actually is stored in the collection. This is a crux of all my readings studies and analysis. GIST NOTES 7 - Java Generics and Collections [DISCLAIMER: This is solely for non-commercial use. The common case for Java generics involves being able to write type-safe algorithms which can be applied to any appropriate data-type. Specifically, please show examples of undesired consequences if the compiler allowed each of these to compile. Collections.Generic; using System.Collections.ObjectModel; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { List listOfDates = GetSomethingOf, DateTime>(); Console. I don't claim ownership of this content. Please help me understand why add1() and add4() report errors and why add2() and add3() don't. Lets see the anatomy of List interface defined in java.util package:. 2 Responses to “Java Generics – how to strike a balance between expressiveness and simplicity”. 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. We are using java collection API to store and retrieve objects.