Mon premier blog

Java Generics and Collections by Maurice Naftalin Maurice, Philip Wadler

Java Generics and Collections Maurice Naftalin Maurice, Philip Wadler ebook
ISBN: 0596527756, 9780596527754
Publisher: O'Reilly Media
Page: 288
Format: chm

Java Generic's wildcards is a mechanism in Java Generics aimed at making it possible to cast a collection of a certain class, e.g A, to a collection of a subclass or superclass of A. Extends User> alist = new ArrayList would not only contain SubtypeOfSuperType objects. Perhaps everyone already knows about this, but I just found a very interesting feature of Java Generics - you can declare synthetic composite types using multiple bounds to allow you to treat two different classes that implement the same interfaces as if they had a common super Collection things = new ArrayList); // DOES NOT COMPILE this.add(new Foo()); this.add(new Bar()); doSomethingElse(things);. Details: Category: Programming Guides & Tutorials: Published on Tuesday, 26 March 2013 17:41: Written by Vinayaga Moorthy. Free download eBook Java Generics and Collections pdf epub from direct-link. Extends User> users){} but I cannot instantiate that same List in a similar way? Covers both generics and Collections.