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Oracle 1Z0-869 Exam Syllabus Topics:

Oracle Java Mobile Edition 1 Mobile Application Developer Certified Professional Sample Questions:

Question 1

Assuming an application descriptor contains: MIDlet-Data-Size: 4096 Which is true?

A. The device will permanently reserve 4096 bytes of RMS space for the application.
B. The device will permanently reserve 4096 bytes of heap space for the application.
C. The device will use 4096 bytes to buffer data the application sends over the network.
D. The device will use 4096 bytes to buffer data the application receives over the network.

Question 2

Given:
MIDlet-Push-1: datagram://:444, com.fooworks.PushExample, *
MIDlet-Push-2: datagram://:555, com.fooworks.PushExample, *
are statically registered push connections and given:
1 1. protected void startApp() {
1 2. String[] connections = PushRegistry.listConnections(true);
1 3. if(connections.length == 0) {
1 4. connections = PushRegistry.listConnections(false);
1 5. for (int i=0; i < connections.length; i++) {
1 6. new DatagramHandler(connections[i]).start();
1 7. }
1 8. } else {
1 9. for (int i=0; i < connections.length; i++) {
2 0. new DatagramHandler(connections[i]).start();
2 1. }
2 2. }
2 3. }
Which two identify what will go wrong if the code is invoked by the Application Management Software in response to an inbound connection notification? (Choose two.)

A. The first inbound datagram is ignored, all subsequent datagrams are handled by DatagramHandler.
B. Datagrams for the active connection are handled, but any datagrams sent to the other port are missed.
C. Duplicate DatagramHandler objects are created if the MIDlet is paused and then resumed.
D. The first inbound datagram is handled, but all other datagrams are missed.
E. An IOException is thrown if there are no active connections.

Question 3

Given:
a JAR containing a MIDlet named TesterMIDlet
a JAD with this content: CertificationExam:
Sun Certified Mobile Application DeveloperMIDlet-1: TesterMIDlet, ,
certification.TesterMIDlet MIDlet-Jar-Size: 2038 MIDlet-Jar-URL: Certification.jar MIDlet- Name: Certification MIDlet-Vendor: A Testing Company MIDlet-Version: 1.0 MicroEdition- Configuration: CLDC-1.0 MicroEdition-Profile: MIDP-2.0 This MIDlet needs to get the property with the key CertificationExam defined in the JAD.
This needs to be assigned to a String ExamName from within the MIDlet.startApp() method.
What is the correct way to accomplish this?

A. String ExamName = this.getAppProperty("MIDlet-CertificationExam");
B. String ExamName = System.getProperty("CertificationExam");
C. String ExamName = this.getAppProperty("CertificationExam");
D. String ExamName = System.getProperty("MIDlet-CertificationExam");

Question 4

Which is true regarding Timer objects?

A. Multiple threads can never share a single Timer object.
B. Multiple threads can share a single Timer object only by using external synchronization.
C. A thread CANNOT stop a Timer object if it is executing a task.
D. Multiple threads can share a single Timer object without using external synchronization.

Question 5

Which two are true regarding a device that implements JTWI? (Choose two.)

A. The device must implement at least the lowest version of the API as identified by the JTWI specification.
B. The device may implement a higher version of the API as identified by the JTWI specification.
C. The device is NOT required to implement all of the MIDP 2.0 API as identified by the MIDP 2.0 specification.
D. The device must implement the highest version of the API as identified by the JTWI specification.

Solutions: