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

1. What are two benefits of the PushRegistry? (Choose two.)

A) It provides a way for an incoming connection to invoke a MIDlet that can handle the content sent by the connection.
B) It provides a way to restrict HTTP connections to well-known network addresses.
C) It provides a way for the AMS to automatically invoke a MIDlet at a specified time if it is not already running.
D) It provides a way for two MIDlet suites running on the same device to discover and communicate with each other in a secure manner.

2. What is the result if a call to serviceRepaints() triggers a separate thread to invoke paint()?

A) An exception is thrown at runtime.
B) MIDP is thread-safe. There will never be a deadlock.
C) The system may deadlock if the caller to serviceRepaints() holds a lock that is also needed by paint().
D) A deadlock always occurs.

3. Given:
1 0. public class ExampleMIDlet extends MIDlet {
1 1. //...
2 0. public ExampleMIDlet() {
2 1. Hashtable cache = new Hashtable();
2 2. synchronized (cache) {
2 3. while (cache.isEmpty()) {
2 4. try {cache.wait();}
2 5. catch (InterruptedException e) {/* handle me */}
2 6. }
2 7. }
2 8. }
2 9. //...
4 0. }
Which two are true? (Choose two.)

A) The program hangs.
B) The program is in conflict with recommendations of the MIDP specification.
C) An unchecked exception is thrown at runtime.
D) An IllegalMonitorStateException is thrown at runtime.

4. What is the area that the developer must paint when using CustomItem?

A) CustomItem is limited to painting in the content area.
B) The areas are unlimited. CustomItem may paint inside any area on the screen.
C) CustomItem must paint the content area, its labels, and its border.
D) CustomItem size is always honored by the system. Once created, the CustomItem always has this area to paint in.

5. DRAG DROP
Click the Task button.
Place the connection interfaces in their appropriate places in the hierarchy.

Solutions: