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

Which four are direct subclasses of Screen? (Choose four.)

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.)

Which guarantees the application can be installed without push registration conflicts?

Which three functions are performed during the preverification process? (Choose three.)

What is the minimum number of received SMS messages that a JTWI device must be able to concatenate?

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?

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?

Which is true regarding access of the manifest file in a MIDlet suite's JAR file?

Given:
1 5. String addr = "sms://+14155557296";
1 6. MessageConnection conn
1 7. = (MessageConnection) Connector.open(addr);
1 8. // insert code here
1 9. message.setPayloadData(imageBytes);
Assume imageBytes is a valid byte array.
Which statement, inserted at line 18, causes the rest of the code fragment to compile correctly?

Assume a particular JTWI phone supports server socket connections. A MIDlet running on the phone attempts to register a connection using:
PushRegistry.registerConnection(connection, midlet, filter); Assume connection, midlet, and filter are NOT null. The statement is executed and throws a ConnectionNotFoundException. What causes the exception?

A MIDlet makes its only attempt to register a push connection on a JTWI device using:
PushRegistry.registerConnection(
"datagram://:79", midlet, "10.0.0.???");
Which is true?

Click the Exhibit button.
Given:
The MIDlet is executed.
The MIDlet is paused and resumed two times.
What is the result?

Given:
1 . import javax.microedition.midlet.*;
2 . public class Foo extends MIDlet {
3 . public void go() {
4 . try {
5 . doStuff();
6 . } catch(java.lang.NoClassDefFoundError e) { }
7 . }
8 . void doStuff() { }
9 . public void destroyApp(boolean b) { }
1 0. public void pauseApp() { }
1 1. public void startApp() {go();}
1 2. }
Assuming the application is targeted for CLDC 1.1, what is the result?

Given:
30. public boolean X(byte[] Y) throws IllegalArgumentException {
31. ByteArrayInputStream bais = new ByteArrayInputStream(arg);
32. DataInputStream dis = new DataInputStream(bais);
33. String type = null; 34. try {type = dis.readUTF();}
3 5. catch (Exception e) { }
3 6. return(Z);
3 7. }
Which substitutions for X, Y, and Z in the code create a valid implementation of RecordFilter that matches records whose type is NOT deleted?

Which two guarantee a wireless message will be removed from the incoming message buffer by the Application Management Software? (Choose two.)