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: Sep 25, 2026
  • Q & A: 340 Questions and Answers

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Oracle 1Z0-869 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Security10%- CLDC and MIDP security model
- Secure network communication
- Permissions and protection domains
Topic 2: Persistence & Storage10%- Data sharing and access control
- Record stores and operations
- Record Management System (RMS)
Topic 3: MIDP Application Model & Lifecycle15%- Push Registry mechanism
- MIDlet lifecycle and states
- Application delivery and provisioning
- JAD and JAR files structure
Topic 4: JTWI Overview and Wireless Application Basics10%- Architecture of JTWI-compliant applications
- Java Technology for Wireless Industry (JSR 185)
Topic 5: MIDP User Interface15%- Low-level UI and Canvas
- Event handling and commands
- MIDP Game API
- High-level UI components
Topic 6: CLDC Configuration15%- CLDC 1.0 and CLDC 1.1 features
- Memory and resource constraints
- Connected Limited Device Configuration APIs
Topic 7: Networking & Communication15%- Generic Connection Framework (GCF)
- Wireless Messaging API (WMA) 1.1
- HTTP, HTTPS, Socket connections
- Multimedia API (MMAPI) 1.1

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

Question #1

Given:
1 4. Canvas canvas;
1 5. // ...
2 4. canvas.repaint(10,10,20,20);
2 5. canvas.serviceRepaints();
What occurs when serviceRepaints() is called?

  • A. The application blocks until the paint() method returns.
  • B. The application immediately calls the repaint() method.
  • C. The application immediately calls the paint() method.
  • D. The application blocks until the repaint() method returns.
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

Question #2

Which URL indicates the intention for one JTWI device to communicate with another JTWI device?

  • A. sms://+18005551234:1234
  • B. cbs://+18005551234:1234
  • C. cbs://+18005551234
  • D. sms://+18005551234
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

Question #3

Which two are true about errors and exceptions in a CLDC-compliant virtual machine?
(Choose two.)

  • A. Rather than throwing the Error class specified by the Java Language Specification, the CLDC-compliant virtual machine may throw a CLDC-supported superclass.
  • B. Developers are NOT allowed to handle errors.
  • C. Developers do NOT receive asynchronous exceptions from a CLDC-compliant virtual machine.
  • D. Developers must throw only checked (non-runtime) exceptions.
  • E. A CLDC-compliant virtual machine must NOT throw a VirtualMachineError.
Reveal Solution  Discussion  0

Correct Answer: A,C  🗳️

Question #4

Assume a particular JTWI phone supports server socket connections. A MIDlet running on the phone attempts to register a connection using:
PushRegistry.registerConnection(connection, midlet, filter);
Assume connection, midlet, and filter are NOT null. The statement is executed and throws a ConnectionNotFoundException.
What causes the exception?

  • A. The syntax of connection is invalid.
  • B. The specified MIDlet does NOT exist.
  • C. The requested connection is already registered.
  • D. The phone does NOT support push connections using server sockets.
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

Question #5

A MIDP 2.0 developer is building a game using the MIDP game API that requires user control over the direction of a Sprite within a GameCanvas. The developer wants to keep performance high and reduce memory use. Which two fulfill the goals? (Choose two.)

  • A. poll for the current state of user key input in a loop, using getKeyStates()
  • B. suppress key events for the GameCanvas object
  • C. implement keyPressed(), keyReleased(), and keyRepeated()
  • D. in the GameCanvas object, use actual key codes rather than mapped game action constants
Reveal Solution  Discussion  0

Correct Answer: A,B  🗳️

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