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

1. Given the MIDlet code:
3 . public void go() {
4 . try {
5 . doStuff();
6 . } catch(java.lang.IllegalAccessError e) {
7 . aForm.append("An Error");
8 . }
9 . }
Assuming the aForm variable on line 7 is a correctly initialized Form and set to the current display, what is the result?

A) The MIDlet fails at runtime due to a problem on line 6.
B) An Error is printed to the display if an IllegalAccessError occurs.
C) Compilation fails due to a problem on line 7.
D) Compilation fails due to a problem on line 6.
E) The MIDlet fails at runtime due to a problem on line 7.

2. Which two events can result in the removal of a MIDlet's dynamic push connection registration? (Choose two.)

A) Using a call to PushRegistry.registerConnection().
B) Using a call to PushRegistry.removeConnection().
C) Using a call to PushRegistry.unregisterConnection().
D) When MIDlet.destroyApp() is called.
E) When the MIDlet is uninstalled.
F) Opening the connection using Connector.open().

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

A) c: 0
B) c: 1
C) c: 2
D) An exception is thrown at runtime.
E) c: 3

4. When using X.509 PKI, where must a MIDlet suite's security certificates be placed?

A) in a user-defined subclass of SecurityInfo in the JAR's META-INF directory
B) inlined in the JAD, using a base64 encoding
C) inlined in the JAR manifest, using a base64 encoding
D) in .cer files in the JAR's META-INF directory

5. Given the JAD file fragment:
MIDlet-1: Calendar, calendar.png, com.example.CalendarMIDlet
MIDlet-2: Chat, chat.png, com.example.ChatMIDlet
What CalendarMIDlet code launches ChatMIDlet at the time specified by variable chatTime?

A) PushRegistry.registerAlarm("MIDlet-1", chatTime);
B) PushRegistry.registerAlarm
("com.example.ChatMIDlet", chatTime);
C) PushRegistry.registerAlarm
(Class.forName("com.example.ChatMIDlet"), chatTime);
D) PushRegistry.registerAlarm("Chat", chatTime);

Solutions: