Download Beginning J2ME. From Novice to Pro by Sing Li, Jonathan Knudsen PDF

By Sing Li, Jonathan Knudsen

Have you ever thought of construction video games to your cellphone or different instant units? even if you're a first-time instant Java developer, or an skilled specialist— starting J2ME, 3rd version brings fascinating instant and cellular Java program improvement correct on your door!
This ebook will empower you with a variety of themes: sound HTTPS aid, consumer interface API improvements, sound/music API, a online game API, 3D pix, and Bluetooth. extra, this e-book is straightforward to learn and contains many functional, hands-on, and ready-to-use code examples. you won't be dissatisfied.

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Extra resources for Beginning J2ME. From Novice to Pro

Sample text

You can specify extra manifest information in a simple text file and tell the jar utility to include that information in the manifest when the JAR is created. class With the J2ME Wireless Toolkit, the toolkit automatically assembles your application into a MIDlet suite JAR when you click the Build button. It’s very convenient, and it saves you from the effort of learning the jar tool. Creating a MIDlet Descriptor One additional file is needed before your MIDlet is ready to go out the door. An application descriptor file must be created.

35 36 CHAPTER 3 ■ ALL ABOUT MIDLETS Protection Domains MIDlet suites belong to protection domains that determine which permissions are granted, which are denied, and which ones must be deferred to the user’s judgment. A protection domain is kind of like a secret club and comprises two parts: 1. The set of permissions that are allowed and those for which the user must be consulted 2. http. The rules for membership in SimplePD could be something as simple as verifying the origin IP address of the MIDlet suite.

0 devices, if calculations involving fractional numbers are important to your application, you can perform them in software. com/ ohommes/MathFP/. 1 includes floating-point support, the primitive types double and float, and the wrapper types Double and Float. 1, but the changes are minor. 2) and CLDC. The CLDC columns indicate whether the class is identical to its J2SE counterpart, is present with API differences, or is not present at all. 39 40 CHAPTER 4 ■ ALMOST THE SAME OLD STUFF Table 4-1. 0 StackTraceElement – – StrictMath – – Interfaces Classes CHAPTER 4 ■ ALMOST THE SAME OLD STUFF Table 4-1.

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