March 2002
Intermediate to advanced
400 pages
8h 44m
English
Content preview from Wireless J2ME™ Platform ProgrammingBecome 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,
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Graphics Drawing
Undoubtedly, you noticed that the canvas in Figure 6.2 was blank except for the Exit soft button. The reason is that the Canvas1 class doesn't define its visual representation. All concrete subclasses of Canvas must define their look in order to render any visual attributes. They must enlist the help of the javax.microedition.lcdui.Graphics class to do so. The very purpose of the Graphics class is to support drawing on canvases.
The Graphics Model
The Graphics class defines low-level graphics drawing capabilities. If you've already done AWT or Swing development, this class will look very familiar. In fact, its features and API are almost identical to, albeit a subset of, those in the J2SE Graphics class.
The Graphics class defines ...
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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.
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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.