January 2002
Intermediate to advanced
264 pages
8h 3m
English
Content preview from Wireless Java
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
MIDP Connectivity
The MIDP extends the CLDC Generic Connection Framework to provide support for the HTTP protocol. Why HTTP? Well, HTTP can be implemented using both IP protocols (such as TCP/IP) or non-IP protocols (such as WAP and I-mode). In the latter case, the device would have to utilize a gateway that could perform URL naming resolution to access the Internet, as shown in Figure 7-2.
Figure 7-2. The benefit of HTTP support
Tip
All of the MIDP 1.0 implementations must provide support for the HTTP protocol. Therefore, we encourage you to only use protocols supported by the MIDP (i.e., HTTP), as this will allow the application to be portable across all mobile information devices.
The idea of having the MIDP support the HTTP protocol is very clever. For network programming, you can revert to the HTTP programming model, and your applications will run on any MIDP device, whether it is a GSM phone with a WAP stack, a phone with I-mode, a Palm VII wireless, or a handheld device with Bluetooth.
The HttpConnection Interface
The
HttpConnection
interface is part of the
javax.microedition.io
package. This interface defines the
necessary methods and constants to exchange data through an HTTP
connection. It has the following methods (the constants, which have
been omitted here to save space, are documented in Appendix D):
public interface HttpConnection extends ContentConnection { // public ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.