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

1Z0-869

Exam Code: 1Z0-869

Exam Name: Java Mobile Edition 1 Mobile Application Developer Certified Professional Exam

Updated: Jul 19, 2026

Q&A Number: 340 Q&As

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1Z0-869 Online Test Engine

Oracle 1Z0-869 Exam Syllabus Topics:

SectionObjectives
Networking and Communication- Generic Connection Framework (GCF)
- HTTP/HTTPS connections in Java ME
MIDlet Development- MIDlet lifecycle
- User interface components and event handling
Security Model- Signed MIDlets and trust levels
- Sandbox model and permissions
Packaging and Deployment- JAR/JAD packaging
- Deployment to mobile devices
Data Storage and Persistence- Record Management System (RMS)
Java ME Architecture and Fundamentals- MIDP (Mobile Information Device Profile)
- Java ME platform architecture overview
- CLDC (Connected Limited Device Configuration)

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

1. Which two are true? (Choose two.)

A) Canvas.serviceRepaints() and Canvas.callSerially() can be used to create a constant frame-rate animation loop.
B) Synchronous painting to the device display is possible with GameCanvas.
C) GameCanvas always needs a separate thread to draw anything on the screen.
D) paint() is never called for GameCanvas subclasses.


2. What is the minimum volatile memory requirement identified by the CLDC 1.1 specification?

A) 128 KB
B) 32 KB
C) 160 KB
D) 64 KB


3. Assuming an application descriptor contains:
MIDlet-Data-Size: 4096
Which is true?

A) The device will permanently reserve 4096 bytes of RMS space for the application.
B) The device will permanently reserve 4096 bytes of heap space for the application.
C) The device will use 4096 bytes to buffer data the application receives over the network.
D) The device will use 4096 bytes to buffer data the application sends over the network.


4. 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 exactly 40 dB.
B) The volume of the audio is up to the MIDP device.
C) The volume of the audio must be the same on all MIDP devices.
D) The volume of the audio is approximately 0.4 dB.


5. A game running on a J2ME device supporting MMAPI needs to play tones in the background of the game. It intermittently needs to play sounds of explosions.
The code has created two Player objects: one for tones and one for WAV audio.
How does the developer know if both audio streams can be heard simultaneously?

A) The developer can query the system using System.getProperty("supports.mixing");.
B) Playing audio streams simultaneously is NOT possible with any MMAPI implementation.
C) Playing audio streams simultaneously is only a request. The device determines whether to do so.
D) The developer knows playing audio streams simultaneously is supported because two Player objects have been created.


Solutions:

Question # 1
Answer: A,B
Question # 2
Answer: B
Question # 3
Answer: A
Question # 4
Answer: B
Question # 5
Answer: A

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