Exam Name: Java Mobile Edition 1 Mobile Application Developer Certified Professional Exam
Certification Provider: Oracle
Corresponding Certification: Java Technology
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Oracle 1Z0-869 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Data Storage and Persistence | - Record Management System (RMS) |
| Packaging and Deployment | - JAR/JAD packaging - Deployment to mobile devices |
| Security Model | - Sandbox model and permissions - Signed MIDlets and trust levels |
| Java ME Architecture and Fundamentals | - Java ME platform architecture overview - CLDC (Connected Limited Device Configuration) - MIDP (Mobile Information Device Profile) |
| Networking and Communication | - HTTP/HTTPS connections in Java ME - Generic Connection Framework (GCF) |
| MIDlet Development | - User interface components and event handling - MIDlet lifecycle |
Oracle Java Mobile Edition 1 Mobile Application Developer Certified Professional Sample Questions:
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 is approximately 0.4 dB.
- B. The volume of the audio must be the same on all MIDP devices.
- C. The volume of the audio is exactly 40 dB.
- D. The volume of the audio is up to the MIDP device.
Given the MIDlet code:
1 5. boolean main_called;
1 6. public static void main(String args[]) {
1 7. main_called = true;
1 8. }
1 9. public void startApp() {
2 0. int a;
2 1. if (true == main_called) {
2 2. a = 1;
2 3. } else {
2 4. a = 5;
2 5. }
2 6. }
What is the result?
- A. A compilation error occurs when compiling this source.
- B. The source compiles. The application management system will not load this MIDlet.
- C. The source compiles. The MIDlet is started and a = 1.
- D. An error occurs at compile time.
- E. The source compiles. The MIDlet is started and a = 5.
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
conn.newMessage(MessageConnection.BINARY_MESSAGE); - B. Message message = new BinaryMessage();
- C. BinaryMessage message = (BinaryMessage)
conn.newMessage(MessageConnection.BINARY_MESSAGE); - D. BinaryMessage message = new BinaryMessage();
Given:
RecordStore rs = null;
static final String REC_STORE = "appdata"; And, the record store does NOT already exist.
Which is the correct way to open the record store, requesting the record store be created?
- A. rs = RecordStore.createRecordStore(REC_STORE, true);
- B. rs = RecordStore.openRecordStore(REC_STORE);
- C. rs = RecordStore.createRecordStore(REC_STORE, 1);
- D. rs = RecordStore.openRecordStore(REC_STORE, true);
- E. rs = RecordStore.createRecordStore(REC_STORE);
- F. rs = RecordStore.openRecordStore(REC_STORE, 1);
A MIDlet is written to use the media features available in MIDP 2.0. What change is required to use the MIDlet on a device that supports the full MMAPI?
- A. No change is necessary. The MIDP's media API is a proper subset of MMAPI.
- B. Any tone generation code should be removed.
- C. The creation of Player objects must be modified.
- D. The MIDlet CANNOT be used under MMAPI.
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