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

1. A Player plays a sound after start() is called. Which is the most efficient way to pause the playback so that it may be started as soon as possible when required?

A) call close() on the player
B) call stop() on the player
C) call setRate(0) on the player
D) call System.gc() to collect those resources marked for garbage collection

2. 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?

A) Message message = new BinaryMessage();
B) BinaryMessage message = (BinaryMessage)
conn.newMessage(MessageConnection.BINARY_MESSAGE);
C) BinaryMessage message = new BinaryMessage();
D) Message message
conn.newMessage(MessageConnection.BINARY_MESSAGE);

3. Click the Exhibit button.
Which produces the results shown in device A and device B?

A) A: g.drawString("Gray Flyer",0,0,Graphics.TOP |
Graphics.LEFT);
B) g.drawString("Gray Flyer",0,0,Graphics.TOP |
Graphics.BASELINE);
C) A: g.drawString("Gray Flyer",0,0,Graphics.LEFT |
Graphics.BASELINE);
D) g.drawString("Gray Flyer",0,0,Graphics.HCENTER |
Graphics.BOTTOM);
E) A: g.drawString("Gray Flyer",0,0,Graphics.TOP |
Graphics.BASELINE);
F) g.drawString("Gray Flyer",0,0,Graphics.TOP |
Graphics.HCENTER)
G) g.drawString("Gray Flyer",0,0,Graphics.LEFT |
Graphics.HCENTER);
H) A: g.drawString("Gray Flyer",0,0,Graphics.LEFT |
Graphics.TOP);

4. Given:
2 1. TextField tf = new TextField("Memo", "", 50, TextField.ANY);
2 2. DateField df = new DateField("Date", DateField.DATE_TIME);
2 3. Form fm = new Form("Form demo");
2 4. Command cmCount = new Command("Word count", Command.ITEM, 1);
2 5. Command cmExit = new Command("Exit", Command.EXIT, 1);
2 6.
2 7. tf.addCommand(cmCount);
2 8. fm.append(df);
2 9. fm.append(tf);
3 0. fm.addCommand(cmExit);
3 1. fm.setCommandListener(this);
Which is true?

A) An exception is thrown at runtime.
B) The cmCount command is available only when tf is the active Item.
C) The cmCount and cmExit commands is always available on fm, regardless of which Item is active.
D) Compilation fails.
E) The cmExit command is available only when df is the active Item.

5. A MIDlet suite on a device uses socket connections. The device always asks the user for permission when the suite tries opening a socket connection. What is always false about the MIDlet suite?

A) It is trusted and requests permission to use sockets with MIDlet-Permissions-Opt.
B) It is trusted and requests permission to use sockets with MIDlet-Permissions-User.
C) It is untrusted.
D) It is trusted and requests permission to use sockets with MIDlet-Permissions.

Solutions: