File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
http://aspose.com/file-tools
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Java Collections

 
Jon Camilleri
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When should I use a HashMap or a TreeMap, and, when should I use a HashSet, or a DeQue?
What are the practical applications suggested for the Collections?
 
Jesper de Jong
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A Map, a Set and a Deque are very different data structures. Do you understand the difference between them? The API documentation of those classes also contains detailed information about them.
 
Campbell Ritchie
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. . . or the Java™ Tutorials.
 
I agree. Here's the link: http://aspose.com/file-tools
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