Java 2 micro edition application development by Michael Kroll; Stefan Haustein PDF


By Michael Kroll; Stefan Haustein

ISBN-10: 0768662133

ISBN-13: 9780768662139

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However, for "true" PDAP applications, using the advanced capabilities of the PDA profile, a new entry type PDAlet- must be used. If a MIDlet- entry with the same number is included, the PDAlet entry overrides the corresponding MIDlet entry. This allows you to include both MIDP and PDAP versions of the same application in a single pair of JAD and JAR files. The syntax of the PDAlet entries is identical to the syntax of the MIDlet entries. 5. 0 MIDlet-Vendor: Michael Kroll & Stefan Haustein MIDlet-Jar-Size: ???

The preverification process and its motivation are described in the next section. For application-level security, J2SE provides security managers for fine-grained access control. Unfortunately, security managers consume too much memory to be included in CLDC devices. For this reason, CLDC provides the simpler sandbox model for application security. The sandbox model means that Java applications run in a closed environment where only APIs known to be safe can be accessed. The sandbox model means that the following additional restrictions apply: • The Java Native Interface (JNI) is not available, in order to prevent backdoor access to native functionality that is not exposed through the Java APIs provided with the device.

Again, you don't need to do anything here for this simple application: public void destroyApp(boolean unconditional) { } } Note The HelloMidp Midlet does not provide a command to exit the MIDlet, assuming that the device provides a general method of terminating MIDlets. For real MIDP applications, we recommend that you add a command to terminate the MIDlet because the MIDP specification does not explicitly support this assumption. " MIDP User Interface APIs The MIDP user interface API is divided into a high- and low-level API.

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Java 2 micro edition application development by Michael Kroll; Stefan Haustein

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