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Collection Api In Java Pdf Download
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Trail: Collections Home Page > Collections Previous•Trail•Next Lesson: Introduction to Collections A collection sometimes called a container is simply an object that groups multiple elements into a single unit. Complaints? Compliments? Suggestions? Give us your feedback. Implementations: These are the concrete implementations of the collection interfaces. Interfaces allow collections to be manipulated independently of the details of their representation. .. In object-oriented languages, interfaces generally form a hierarchy.
Documentation . Reduces effort to design new APIs: This is the flip side of the previous advantage. Algorithms: These are the methods that perform useful computations, such as searching and sorting, on objects that implement collection interfaces. Typically, they represent data items that form a natural group, such as a poker hand (a collection of cards), a mail folder (a collection of letters), or a telephone directory (a mapping of names to phone numbers). The various implementations of each interface are interchangeable, so programs can be easily tuned by switching collection implementations. Historically, collections frameworks have been quite complex, which gave them a reputation for having a steep learning curve. We believe that the Java Collections Framework breaks with this tradition, as you will learn for yourself in this chapter. Fosters software reuse: New data structures that conform to the standard collection interfaces are by nature reusable. Designers and implementers don't have to reinvent the wheel each time they create an API that relies on collections; instead, they can use standard collection interfaces.
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by Yileefadi on 2016-08-31 09:53:27
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