Oracle Oracle Certifications 1Z0-869 Questions & Answers

• Question 181:

  Given:

  12.

  class TestRecordListener implements RecordListener {

  13.

  public void recordAdded(RecordStore rcs, int recordId) {

  14.

  // ...

  25.

  }

  26.

  public void recordDeleted(RecordStore rcs, int recordId) {

  27.

  // ...

  33.

  }

  34.

  public void recordChanged(RecordStore rcs, int recordId) {

  35.

  // ...

  43.

  }

  44.

  }

  If rs is a valid and open record store, how can you properly associate a record listener with rs?

  A. rs.addRecordListener(new TestRecordListener())

  B. rs.newRecordListener(new TestRecordListener())

  C. rs.setRecordListener(new TestRecordListener())

  D. rs.createRecordListener(new TestRecordListener())

  Correct Answer: A

• Question 182:

  Which three dimensions of a standard-size application does the JTWI 1.0 specification define? (Choose three.)

  A. JAR size

  B. heap size

  C. RMS data size

  D. screen size

  E. JAD size

  Correct Answer: ACE

• Question 183:

  The developer is designing a game that uses the LayerManager and Sprite classes. Three Sprite objects are added to a LayerManager object and a call is placed to the LayerManager.paint(Graphics, x, y) method. In what order are the Sprite objects rendered to the device display?

  A. The Sprites are rendered in a random order.

  B. The Sprites are rendered in order of descending index.

  C. The Sprites that are animated are rendered first.

  D. The Sprites are rendered in an implementation specific manner.

  Correct Answer: B

• Question 184:

  Which two are true about MIDlet suite provisioning? (Choose two.)

  A. A JTWI-compliant device must support HTTP 1.1.

  B. A JTWI-compliant device must support HTTP 1.0.

  C. A JTWI-compliant device must support HTTP 1.1 and cookies.

  D. A JTWI-compliant device must support HTTP authentication.

  Correct Answer: AD

• Question 185:

  Which image format(s) must be supported by a JTWI 1.0 compliant device for Image object creation?

  A. JPEG and GIF

  B. PNG only

  C. TIFF and PNG

  D. PNG and JPEG

  E. all formats

  Correct Answer: D

• Question 186:

  Given:

  14.

  Canvas canvas;

  15.

  // ...

  24.

  canvas.repaint(10,10,20,20);

  25.

  canvas.serviceRepaints();

  What occurs when serviceRepaints() is called?

  A. The application blocks until the repaint() method returns.

  B. The application immediately calls the paint() method.

  C. The application immediately calls the repaint() method.

  D. The application blocks until the paint() method returns.

  Correct Answer: D

• Question 187:

  Given the MIDlet code:

  7.

  public void exitApp() {

  8.

  Runtime rt = Runtime.getRuntime();

  9.

  rt.exit(0);

  10.

  }

  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. Compilation fails because of an error on line 8.

  D. exitApp() completes execution successfully.

  Correct Answer: B

• Question 188:

  Which four are direct subclasses of Screen? (Choose four.)

  A. Form

  B. List

  C. Canvas

  D. TextField

  E. Alert

  F. Choice

  G. TextBox

  Correct Answer: ABEG

• Question 189:

  Given the JAD file:

  1.

  MIDlet-1: YourMIDlet, MyMIDlet.png, YourMIDlet

  2.

  MIDlet-2: MyMIDlet, MyMIDlet.png, MyMIDlet

  3.

  MIDlet-3: TheirMIDlet, MyMIDlet.png, TheirMIDlet

  4.

  MIDlet-Jar-Size: 46902

  5.

  MIDlet-Name: MyMIDlet

  6.

  MIDlet-Jar-URL: http://mywebserver.com/mymidlets/MyMIDlet.jar

  7.

  MIDlet-Vendor: MyCompany

  8.

  MIDlet-Version: 1.1

  Which two can be true for a JTWI-compliant device after installation of the MIDlet suite? (Choose two.)

  A. The device executes the MIDlet referred to by the MIDlet-2 attribute in the JAD file.

  B. The device executes the MIDlet referred to by the MIDlet-1 attribute in the JAD file.

  C. The device shows a menu to the user for selecting the MIDlet to execute.

  D. The device executes all three MIDlets in sequence starting from the first.

  Correct Answer: BC

• Question 190:

  Click the Exhibit button. Which two are true? (Choose two.)

  

  A. In class A, no new events will be delivered to the application until after the commandAction() method completes.

  B. The event-handling mechanism in class A allows multiple command events to be delivered to the application in parallel.

  C. The commandAction() method code in class B is compliant with the event-handling approach recommended in the MIDP 2.0 specification.

  D. The commandAction() method code in class A is NOT guaranteed to be portable across all MIDP 2.0-compliant devices.

  E. In class B, no new events will be delivered to the application until after the commandAction() method completes.

  F. The event-handling in class A will NOT print done with action until after the run() method has completed.

  Correct Answer: AE