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

1. DRAG DROP
Click the Task button.
Match the exceptions and errors with the platforms.
You must label ALL exceptions and errors with one of the three platform options.

2. Given
1 0. // ...
2 0. VolumeControl vc;
2 1. vc = (VolumeControl) player.getControl("VolumeControl");
2 2. vc.setLevel(4);
2 3. // ...
Which is true about the volume of audio playback from player when the code is executed?

A) The volume of the audio must be the same on all MIDP devices.
B) The volume of the audio is up to the MIDP device.
C) The volume of the audio is exactly 40 dB.
D) The volume of the audio is approximately 0.4 dB.

3. Given:
1 0. MessageConnection connection;
1 1.
1 2. public void startApp() {
1 3. //...
1 4. connection
1 5. = (MessageConnection) Connector.open("sms://:6222");
1 6. connection.setMessageListener(this);
1 7. // ...
2 8. }
2 9.
3 0. public void notifyIncomingMessage(MessageConnection conn) {
3 1. //...
4 0. }
4 1.
4 2. public void run() {
4 3. Message msg = conn.receive();
4 4. //...
6 0. }
Which two security permissions must this application request to be able to receive messages? (Choose two.)

A) javax.microedition.io.PushRegistry
B) javax.microedition.io.Connector.sms
C) javax.microedition.io.Connector
D) javax.wireless.messaging.sms.PushRegistry
E) javax.wireless.messaging.sms.listener
F) javax.wireless.messaging.sms.receive

4. Given: 10. MessageConnection conn;
1 1.
1 2. public void startApp() {
1 3. try {
1 4. conn = (MessageConnection) Connector.open("cbs://:3382");
1 5. //...
1 7. } catch (Exception e) {
1 8. //...
2 0. }
2 1. }
2 2.
3 0. public void run() {
3 1. Message msg = conn.receive();
3 2. //...
4 0. conn.send(msg);
4 1. }
What is the result?

A) The code successfully sends a message.
B) An error at line 14 causes compile to fail.
C) An error at line 40 causes an exception at runtime.
D) An error at line 31 causes an exception at runtime.
E) An error at line 14 causes an exception at runtime.

5. Given:
5 0. class MyGameCanvas extends Canvas {
5 1. //...
6 0. public MyGameCanvas() {
6 1. int width1 = getWidth();
6 2. int height1 = getHeight();
6 3. //...
7 0. setFullScreenMode(true);
7 1. //...
8 0. int width2 = getWidth();
8 1. int height2 = getHeight();
8 2. //...
9 0. }
What is true about width1, height1 and width2, height2?

A) width1 is always equal to width2.
B) height1 is always equal to height2.
C) The call to setFullScreenMode() is ignored because the dimensions have already been set.
D) The system tries to provide maximum visible area to the MIDlet and these dimensions are width2, height2.

Solutions: