JAVA COLLECTIONS EBOOK
Part II. Collections. The Main Interfaces of the Java Collections Framework. .. Safari offers a solution that's better than e-books. It's a virtual library that. mystical poems of rumi Translated from the Persian by resourceone.infoy Annotated and prepared Mystical Poems of Rumi Microsoft Access Step by Step. Editorial Reviews. Review. "This is a very good book on two fairly focused topics - generics and resourceone.info: Java Generics and Collections: Speed Up the Java Development Process eBook: Maurice Naftalin, Philip Wadler: Kindle Store.
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Read "Java Generics and Collections Speed Up the Java Development Process" by Maurice Naftalin available from Rakuten Kobo. Sign up today and get $5 off. Contribute to shshankar1/ebooks development by creating an account on GitHub . There Is No Preview Available For This Item. This item does not appear to have any files that can be experienced on resourceone.info
As it is based on arrays, it is very fast to iterate and read from, but very slow to add or remove an element at random positions, as it has to rebuild the underlying array structure.
In contrast, LinkedList makes it easy to add or remove elements at any position in the list while being slower to read from at random positions. Long story short, its performance is suboptimal, so no new code should ever have to use it. An ArrayList or LinkedList simply does a better job. The Queue Interface Lastly, we take a look at the classes implementing Queue. Another thing to mention about LinkedList is that while it implements List, it actually also implements Queue.
It does so based on the fact that its actual implementation as a doubly-linked list makes it quite easy to also implement the Queue interface. It is an implementation that keeps its elements ordered automatically. It has functionality similar to TreeSet, except that it allows duplicate entries.
The Map Interface We now take a look at the Map interface, one which oddly enough has no relation to the Collection interface. A Collection operates on one entity, while a Map operates on two: a unique key, e. To retrieve an object from a Map, you would normally use its key. Map is the root of quite a number of interfaces and classes, as depicted on Figure 2.
Unfortunately, like Vector, the class is deprecated because of its suboptimal performance. We can forget about it and use the other Map implementations instead.
HashMap is the default implementation that you will find yourself using in most cases.
An exception to this rule, however, is LinkedHashMap, which allows us to iterate the map in the order of insertion. As the name implies, SortedMap extends Map and defines the contract of a constantly sorted map. NavigableMap takes it even further, adding methods to navigate sorted maps. This allows us to get all entries smaller or bigger than some entry, for example.
There are actually many similarities between the Map and Set hierarchies. The reason is that Set implementations are actually internally backed by Map implementations. This interface has no relation to the Collection interface. A Collection operates on one entity, while a map operates on two entities — A unique key, for example a Vehicle Identification Number, and an object that is related to this key, for example a car object.
With the help of the key you can retrieve the object it relates to. The interface map is the root of a lot of interfaces and classes, which we will look at now.
The class Hashtable was the first collection in Java JDK1 that was based on the data structure hashtable, so the Java creators called it Hashtable. Unfortunately, this makes it hard to differentiate between the two. Instead, use one of the other classes that implement the map interface.
HashMap is the default implementation that you should use in the majority of cases. A Map usually does not make any guarantees on how it internally stores its elements.
An exception to this rule is LinkedHashMap, which allows to iterate the map in the order of insertion. Last but not least, TreeMap is a constantly sorted map. As the name implies, the interface SortedMap extends the map interface and defines the contract of a constantly sorted map.
NavigableMap again extends the SortedMap interface and adds methods to navigate through the map. The good thing about this Java books is that source code and lecture notes are also available for FREE download. If you like to read paper book then you can also purchase, paperback edition of this book here Steele Jr.
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Paperback edition of this Java book is also available for purchase on Amazon, here. All tutorials are available online and you can also download them for free as eBook, available in both. If you love paperback edition, you can also order it from Amazon.
By the way, these tutorials are really good quality and the great way to explore different features of Java Programming language.
The third edition of this books is freely available for download and you can download them as PDF format for the offline read. One more thing, first six chapters of Thinking in Java 4th edition is also available in PDF format for free download.
Lesson: Introduction to Collections
I liked the chapter on Linked Data structure and Recursion, which teaches some of the key programming concepts with simple, non-trivial Java examples. You can also purchase paperback edition of this book on Amazon. You often need to work with XML files in large projects, as it's one of the most widely used data transport formats. This Java book is a comprehensive and up-to-date collection of various XML technology and how to use them with Java programming language.
You will learn about different XML parsers e.
Java Generics and Collections
If your work involves, XML and Java, then this is the book you should read. This Java book is freely available for online read, and you can buy a paperback edition from any book store including Amazon.
Increases program speed and quality: This Collections Framework provides high-performance, high-quality implementations of useful data structures and algorithms.
The various implementations of each interface are interchangeable, so programs can be easily tuned by switching collection implementations. Because you're freed from the drudgery of writing your own data structures, you'll have more time to devote to improving programs' quality and performance.
Allows interoperability among unrelated APIs: The collection interfaces are the vernacular by which APIs pass collections back and forth. If my network administration API furnishes a collection of node names and if your GUI toolkit expects a collection of column headings, our APIs will interoperate seamlessly, even though they were written independently.
Reduces effort to learn and to use new APIs: Many APIs naturally take collections on input and furnish them as output. There was little consistency among these ad hoc collections sub-APIs, so you had to learn each one from scratch, and it was easy to make mistakes when using them.
With the advent of standard collection interfaces, the problem went away. Reduces effort to design new APIs: This is the flip side of the previous advantage.I promise to talk about this very exciting topic in a later episode.
Books & Videos
But they have also confused many developers who haven't known how to take advantage of these new features. It's actually tailored for students, who wants to give Computer Science advanced placement AP exam, but turn out be a great book for any beginner.
In the context of this article, we will only discuss the bare minimum needed to understand the collections framework. This Collections Framework provides high-performance, high-quality implementations of useful data structures and algorithms. If you see one-letter types in code, it could mean that it can be used in a generic way.
The title should be at least 4 characters long. Jason Hunter. To choose the best collection for a given situation, you have to compare and match the properties of data structures like LinkedList, Hashtable or TreeSet to the problem at hand.