Book Image

BlackBerry Java Application Development

Book Image

BlackBerry Java Application Development

Overview of this book

BlackBerry Smartphone was once the domain of jet-setting business users with power suits. Now you can hardly go anywhere without seeing someone using a BlackBerry to check their messages or make a call. It's this kind of explosive growth that makes the BlackBerry ecosystem a great place to develop and market applications through the BlackBerry App World store—this book shows you how to do just that! This step-by-step guide gives you a hands-on experience of developing innovative Java applications for your BlackBerry. With the help of this book, you will learn to build your own applications to illustrate the platform, and the various capabilities that developers can use in their programs. It explores the powers of Blackberry and helps you develop professional and impressive Java applications. The book teaches how to write rich, interactive, and smart BlackBerry applications in Java. It expects the readers to know Java but not Java Mobile or the BlackBerry APIs. We will learn to build rich, interactive, and smart Java applications for the BlackBerry. The book will cover UI programming, data storage, programming network, and internet API apps. As we move on, we will learn more about the BlackBerry's device features, such as messaging, GPS, multimedia, contacts and calendar, and so on.This book also helps you build your own applications to illustrate the platform, and the various capabilities that developers can use in their programs.
Table of Contents (18 chapters)
BlackBerry Java Application Development
Credits
About the Author
Acknowledgement
About the Reviewers
Preface

Moving beyond HTTP connections


After spending this much time on HTTP connections you may think that this is the only supported connection type available. Oh no, not so! If you want, there are many other connections available. Most people are only interested in HTTP though, but for those who are interested we'll briefly cover a few other types here.

A very near relative to HTTP is the secure version, HTTPS. In general, communicating with an HTTPS connection is the same as with an HTTP connection. The only real difference is that the address portion of the connection string specifies https:// instead of http://. When this happens, the Connector class returns an HttpsConnection object instead of an HttpConnection object, but as the HttpsConnection is derived from HttpConnection, it will essentially function the same.

HTTP is just one of many protocols built on the low-level socket connection, which is the basis for TCP/IP. You can also do raw socket communication if you prefer. Using the raw...