Oracle 1Z0-869 : Java Mobile Edition 1 Mobile Application Developer Certified Professional Exam

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

1. Given:
A record store has three records: Record 1 contains Apple, Record 2 contains Mango, Record 3 contains Cherry, and the RecordComparator class:
1 . public class CompareTest implements RecordComparator {
2 . public int compare(byte[] rec1, byte[] rec2) {
3 . String str1 = new String(rec1), str2 = new String(rec2);
4 . int result = str2.compareTo(str1);
5 . if (result == 0)
6 . return RecordComparator.EQUIVALENT;
7 . else if (result < 0)
8 . return RecordComparator.PRECEDES;
9 . else
1 0. return RecordComparator.FOLLOWS;
1 1. }
1 2. }
What is the return order of the records for an enumerator using CompareTest?

A) Mango, Apple, Cherry
B) Apple, Mango, Cherry
C) Mango, Cherry, Apple
D) Apple, Cherry, Mango
E) Cherry, Mango, Apple
F) Cherry, Apple, Mango

2. Which two are true about record store listeners? (Choose two.)

A) A record store can have more than one registered listener.
B) When a record store is closed, listeners are removed.
C) A record store can have only one registered listener.
D) To listen for all events, three listeners must be registered.
E) Listeners are notified if a record store is deleted.

3. Given the MIDlet code:
11. DatagramConnection dgc
(DatagramConnection)Connector.open("datagram://:444");
1 2. Datagram datagram = dgc.newDatagram(20);
1 3. dgc.receive(datagram);
1 4. byte[] data = datagram.getData();
1 5. String s = new String(data);
1 6. list.append(s, null);
1 7. System.out.println("Datagram received: " + s);
Which two are true regarding the portability of the code between devices? (Choose two.)

A) Port 444 may be restricted or ignored by some MIDP implementations.
B) The code is portable because all the classes and interfaces used are defined in the CLDC.
C) Datagrams may not be supported on all platforms.
D) Installation will fail on devices that do not support datagrams.

4. DRAG DROP
Click the Task button.
Given:
9 . Player p = Manager.createPlayer("http://webserver/music.mp3");
1 0. p.setLoopCount(5);
1 1. p.start();
1 2. p.stop();
1 3. p.close();
What is the order of the states that the Player goes through?

5. What are the rules for the look and feel of the user interface components?

A) The user interface is always in monochrome, so the developer should NOT use color.
B) The dimensions of all the user components are always the same on any device, even if they look different.
C) The user interface look and feel may be drastically different on different devices.
D) The user interface always looks exactly as it does in the MIDP Reference Implementation.

Solutions: