Oracle Java Mobile Edition 1 Mobile Application Developer Certified Professional : 1Z0-869

  • Exam Code: 1Z0-869
  • Exam Name: Java Mobile Edition 1 Mobile Application Developer Certified Professional Exam
  • Updated: Oct 04, 2026
  • Q & A: 340 Questions and Answers

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Oracle 1Z0-869 Exam Syllabus Topics:

SectionObjectives
Topic 1: APIs and Specifications- Security (CLDC and MIDP)
- Wireless Messaging API 1.1
- Media Using MIDP 2.0 and MMAPI 1.1
- Networking
Topic 2: Java ME Technologies- MIDP User Interface API
- CLDC 1.0 and 1.1
- Push Registry
- MIDP Game API
- MIDP Persistent Storage
Topic 3: JTWI and Wireless Application Overview- JTWI (JSR 185) and Overview of JTWI-Compliant Wireless Applications

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

Question #1

Given:
1 0. Player p = Manager.createPlayer(Manager.TONE_DEVICE_LOCATOR);
1 1. VolumeControl vc = p.getVolumeControl();
1 2. vc.setLevel(42);
1 3. vc.setMute(true);
1 4. System.out.println(vc.getLevel());
Which is printed to the console?

  • A. -1
  • B. null
  • C. 42
  • D. 0
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

Question #2

Given:
a JAR containing a MIDlet named TesterMIDlet
a JAD with this content: CertificationExam:
Sun Certified Mobile Application DeveloperMIDlet-1: TesterMIDlet, ,
certification.TesterMIDlet MIDlet-Jar-Size: 2038 MIDlet-Jar-URL: Certification.jar MIDlet- Name: Certification MIDlet-Vendor: A Testing Company MIDlet-Version: 1.0 MicroEdition- Configuration: CLDC-1.0 MicroEdition-Profile: MIDP-2.0 This MIDlet needs to get the property with the key CertificationExam defined in the JAD.
This needs to be assigned to a String ExamName from within the MIDlet.startApp() method.
What is the correct way to accomplish this?

  • A. String ExamName = System.getProperty("MIDlet-CertificationExam");
  • B. String ExamName = System.getProperty("CertificationExam");
  • C. String ExamName = this.getAppProperty("CertificationExam");
  • D. String ExamName = this.getAppProperty("MIDlet-CertificationExam");
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

Question #3

A MIDP 2.0 compliant device creates an HTTP connection to a server that supports HTTP
1.1. Which is true?

  • A. The device definitely does NOT support HTTP 1.1.
  • B. The device definitely supports HTTP 1.1.
  • C. There is no such thing as a 1.1 version of HTTP.
  • D. The device may or may NOT support HTTP 1.1.
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

Question #4

A JTWI device has a working socket implementation. A MIDlet requests permission to use socket connections on this device using the attribute MIDlet-Permissions-Opt, but is denied permission.
Given:
2 0. public void connect() {
2 1. try {
2 2. String addr = "socket://host.com:79";
2 3. SocketConnection sc;
2 4. sc = (SocketConnection) Connector.open(addr);
2 5. sc.setSocketOption(SocketConnection.LINGER, 5);
2 6. InputStream is = sc.openInputStream();
2 7. OutputStream os = sc.openOutputStream();
2 8. os.write("\\r\\n".getBytes());
2 9. int ch = is.read();
3 0. // ...
3 5. } catch (IOException ioe) {
3 6. // ...
4 0. }
4 1. }
Which is true assuming that the argument to Connector.open() points to a valid destination, and the device has resources to create new socket connections?

  • A. If connect() executes, a SecurityException is thrown at runtime at line 24.
  • B. If connect() executes, a SecurityException is thrown at runtime at line 26.
  • C. If connect() executes, a SecurityException is thrown at runtime at line 28.
  • D. If connect() executes, a ConnectionNotFoundException is thrown at runtime at line 24.
  • E. The device disallows the MIDlet to be installed.
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

Question #5

Manager.createPlayer(..) may involve synchronous blocking I/O operations, possibly blocking execution for an indefinite amount of time. Which is the most efficient way to create a Player object and receive the events it generates?

  • A. Ensure System.gc() is called before creating the Player.
  • B. Create the Player in the current thread and listen for events in a separate thread.
  • C. Create the Player from an InputStream, possibly after copying data into memory.
  • D. Create the Player in a separate thread from the user interface, then create a PlayerListener that receives events from this Player.
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

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