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Oracle 1Z0-869 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: CLDC Configuration | 15% | - Memory and resource constraints - CLDC 1.0 and CLDC 1.1 features - Connected Limited Device Configuration APIs |
| Topic 2: JTWI Overview and Wireless Application Basics | 10% | - Architecture of JTWI-compliant applications - Java Technology for Wireless Industry (JSR 185) |
| Topic 3: MIDP User Interface | 15% | - Low-level UI and Canvas - MIDP Game API - High-level UI components - Event handling and commands |
| Topic 4: Persistence & Storage | 10% | - Record stores and operations - Record Management System (RMS) - Data sharing and access control |
| Topic 5: Networking & Communication | 15% | - Multimedia API (MMAPI) 1.1 - Generic Connection Framework (GCF) - HTTP, HTTPS, Socket connections - Wireless Messaging API (WMA) 1.1 |
| Topic 6: MIDP Application Model & Lifecycle | 15% | - MIDlet lifecycle and states - Application delivery and provisioning - Push Registry mechanism - JAD and JAR files structure |
| Topic 7: Security | 10% | - CLDC and MIDP security model - Permissions and protection domains - Secure network communication |
Oracle Java Mobile Edition 1 Mobile Application Developer Certified Professional Sample Questions:
1. Given:
1 0. public class ExampleMIDlet extends MIDlet {
1 1. //...
2 0. public boolean hasCompleted() {
2 1. //...
3 0. }
3 1. public boolean isLowOnMemory() {
3 2. //...
4 0. }
4 1. public void destroyApp(boolean arg) {
4 2. if (X) throw new MIDletStateChangeException();
4 3. }
4 4. //...
5 0. }
Which substitution for X conforms to the MIDP specification?
A) true
B) isLowOnMemory()
C) !hasCompleted()
D) !arg || !hasCompleted()
E) arg && isLowOnMemory()
F) !arg
2. Given a MIDlet that specifies a push registration in the JAD file as:
MIDlet-Push-1: socket://:79, com.sun.example.SampleChat, *
What is the result when the MIDlet is installed onto a device where another MIDlet has already registered the exact same push connection in the PushRegistry?
A) The MIDlet installs, but the connection CANNOT be used.
B) The MIDlet installs, but the MIDlet must register the connection dynamically.
C) The connection can only apply to the currently running MIDlet.
D) The MIDlet installation is aborted and the user is notified of the problem.
E) The MIDlet installs and overwrites any existing push registrations.
3. Which three are top level interfaces in the javax.wireless.messaging package? (Choose three.)
A) MessageConnection
B) Message
C) MessageHandler
D) MessageListener
E) Datagram
F) Connector
4. 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) This is not possible. An Image with semi-transparency CANNOT be created at runtime.
B) use createImage() to create a mutable Image, then fill it with red pixels
C) use createImage() to create a mutable Image; first fill it with white pixels, then fill it with red pixels
D) use createRGBImage() to create an immutable Image from ARGB data with the desired values
5. Click the Exhibit button.
What is the result?
A) myForm contains the string "run count: 2".
B) An exception is thrown at runtime.
C) myForm contains the string "waiting...".
D) myForm contains the string "run count: 0".
E) myForm contains the string "run count: 1".
Solutions:
| Question # 1 Answer: F | Question # 2 Answer: D | Question # 3 Answer: A,B,D | Question # 4 Answer: D | Question # 5 Answer: E |
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