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 | Weight | Objectives |
|---|---|---|
| Topic 1: MIDP User Interface | 15% | - Event handling and commands - MIDP Game API - High-level UI components - Low-level UI and Canvas |
| Topic 2: Persistence & Storage | 10% | - Record Management System (RMS) - Record stores and operations - Data sharing and access control |
| Topic 3: JTWI Overview and Wireless Application Basics | 10% | - Architecture of JTWI-compliant applications - Java Technology for Wireless Industry (JSR 185) |
| Topic 4: Networking & Communication | 15% | - HTTP, HTTPS, Socket connections - Wireless Messaging API (WMA) 1.1 - Generic Connection Framework (GCF) - Multimedia API (MMAPI) 1.1 |
| Topic 5: MIDP Application Model & Lifecycle | 15% | - Push Registry mechanism - Application delivery and provisioning - JAD and JAR files structure - MIDlet lifecycle and states |
| Topic 6: CLDC Configuration | 15% | - Memory and resource constraints - CLDC 1.0 and CLDC 1.1 features - Connected Limited Device Configuration APIs |
| Topic 7: Security | 10% | - Secure network communication - Permissions and protection domains - CLDC and MIDP security model |
Oracle Java Mobile Edition 1 Mobile Application Developer Certified Professional Sample Questions:
Which four are direct subclasses of Screen? (Choose four.)
- A. Alert
- B. Canvas
- C. Choice
- D. Form
- E. List
- F. TextBox
- G. TextField
Correct Answer: A,D,E,F 🗳️
Given the MIDlet code:
7 . public void exitApp() {
8 . Runtime rt = Runtime.getRuntime();
9 . rt.exit(0);
1 0. }
What is the result of a call to exitApp()?
- A. Compilation fails because of an error on line 9.
- B. A SecurityException is thrown at line 9.
- C. exitApp() completes execution successfully.
- D. Compilation fails because of an error on line 8.
Correct Answer: B 🗳️
Which two clarifications does the JTWI specification make regarding how devices implement the Mobile Media API? (Choose two.)
- A. A JTWI device must support Real Time Streaming Protocol (RTSP) for media file download of all supported media formats.
- B. A JTWI device must support WAV file playback.
- C. A JTWI device must support HTTP for media file download of all supported media formats.
- D. A JTWI device must support MP3 file playback.
- E. A JTWI device must support MIDI file playback.
Correct Answer: C,E 🗳️
Given a MIDP 2.0 device supports alpha blending, a MIDlet needs to render semi- transparent images of size 10x10 pixels. However, these images need to be generated at runtime. That is, they CANNOT be loaded as PNGs. What is the correct way to create a
10x10, red, semi-transparent image, using only the MIDP 2.0 API?
- A. use createRGBImage() to create an immutable Image from ARGB data with the desired values
- B. use createImage() to create a mutable Image; first fill it with white pixels, then fill it with red pixels
- C. use createImage() to create a mutable Image, then fill it with red pixels
- D. This is not possible. An Image with semi-transparency CANNOT be created at runtime.
Correct Answer: A 🗳️
Which two are true regarding error handling for classes that exist in both CLDC and J2SE?
(Choose two.)
- A. The set of error classes is much reduced in CLDC to help reduce the overhead of the JVM.
- B. The set of error classes is essentially the same in CLDC and J2SE.
- C. There is no correspondence between the errors defined by CLDC and J2SE because the needs of CLDC and J2SE are so different.
- D. If a class throws an error in CLDC, it should throw the same error as in J2SE or its nearest superclass.
Correct Answer: A,D 🗳️
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