By Maurice Naftalin
ISBN-10: 0596527756
ISBN-13: 9780596527754
This complete consultant exhibits you the way to grasp the main importantchanges to Java because it used to be first published. Generics and the greatlyexpanded assortment libraries have greatly elevated the facility ofJava five and Java 6. yet they've got additionally burdened many builders whohaven't recognized tips to reap the benefits of those new features.
Java Generics and Collections covers every little thing from the mostbasic makes use of of generics to the strangest nook circumstances. It teaches youeverything you must find out about the collections libraries, so you'llalways understand which assortment is suitable for any given activity, andhow to take advantage of it.
Topics lined include:
- Fundamentals of generics: kind parameters and general methods
- Other new positive factors: boxing and unboxing, foreach loops, varargs
- Subtyping and wildcards
- Evolution no longer revolution: primary libraries with legacy consumers andgeneric consumers with legacy libraries
- Generics and reflection
- Design styles for generics
- Sets, Queues, Lists, Maps, and their implementations
- Concurrent programming and thread protection with collections
- Performance implications of alternative collections
Generics and the hot assortment libraries they encouraged take Java to anew point. to be able to take your software program improvement perform toa new point, this publication is key reading.
Philip Wadler is Professor of Theoretical computing device technological know-how at theUniversity of Edinburgh, the place his study makes a speciality of the layout ofprogramming languages. he's a co-designer of GJ, paintings thatbecame the foundation for generics in Sun's Java 5.0.
Maurice Naftalin is Technical Director at Morningside gentle Ltd., a software program consultancy within the uk. He has such a lot lately served as an architect and mentor at NSB Retail platforms plc, and because the chief of the buyer improvement group of a big united kingdom executive social carrier system.
"A really good exposition of generics. by way of some distance the easiest e-book on thetopic, it offers a crystal transparent instructional that begins with thebasics and ends leaving the reader with a deep realizing of boththe use and layout of generics."
Gilad Bracha, Java Generics Lead, solar Microsystems
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Extra info for Java generics and collections
Sample text
If you can replace a type parameter with a wildcard then you should do so. We can improve the signature of max by replacing: Public boolean contains(E o); public boolean containsAll(Collection c); ... } Say we have a class MyList that implements MyCollection. containsAll(objs); // compile-time error The last two tests are illegal, because the type declarations require that we can only test whether a list contains an element of a subtype of that list. So we can check whether a list of objects contains a list of integers, but not the other way around. Which of the two styles is better is a matter of taste. The test code builds three lists, one of apples, one of oranges, and one containing mixed fruits. We may find the maximum of the first two lists, but attempting to find the maximum of the mixed list signals an error at compile time. 1 permits comparison of apples with oranges. 1 are highlighted): Example 3-1. size ? size ? equals(o3); // ok } } Example 3-2. size ? size ? } As before, each fruit has a name and a size, and two fruits are equal if they have the same name and the same size. Now any two fruits are compared by ignoring their names and comparing their sizes. Java generics and collections by Maurice Naftalin
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