Oracle Oracle Certifications 1Z0-869 Questions & Answers

• Question 221:

  When a LayerManager is rendered, the contents of its Sprite objects and TiledLayer objects are rendered using their position information. How are those areas of the LayerManager that are not occupied by a Sprite or TiledLayer rendered?

  A. They CANNOT be rendered. The developer must ensure that these lie outside of the clip region.

  B. The pixels in the destination are left untouched.

  C. The pixels in the destination are painted with Display.COLOR_BACKGROUND.

  D. The pixels in the destination are painted white.

  Correct Answer: B

• Question 222:

  Which three are true for ChoiceGroup? (Choose three.)

  A. You can associate a Command object with a ChoiceGroup.

  B. When using images with a ChoiceGroup, all entries must specify an image.

  C. Images specified for entries may be mutable or immutable.

  D. ChoiceGroup.size() returns the index value of the last entry in a ChoiceGroup.

  E. You can specify different fonts for each ChoiceGroup entry.

  F. When using Choice.EXCLUSIVE, there must always be an element selected.

  Correct Answer: ACF

• Question 223:

  Given:

  a JAR containing a MIDlet named TesterMIDlet

  a JAD with this content: CertificationExam:

  Sun Certified Mobile Application DeveloperMIDlet-1: TesterMIDlet, , certification.TesterMIDlet MIDlet-Jar-Size: 2038 MIDlet-Jar-URL: Certification.jar MIDlet- Name: Certification MIDlet-Vendor: A Testing Company MIDlet-Version: 1.0

  MicroEdition- Configuration: CLDC-1.0 MicroEdition-Profile: MIDP-2.0

  This MIDlet needs to get the property with the key CertificationExam defined in the JAD. This needs to be assigned to a String ExamName from within the MIDlet.startApp() method.

  What is the correct way to accomplish this?

  A. String ExamName = this.getAppProperty("CertificationExam");

  B. String ExamName = this.getAppProperty("MIDlet-CertificationExam");

  C. String ExamName = System.getProperty("CertificationExam");

  D. String ExamName = System.getProperty("MIDlet-CertificationExam");

  Correct Answer: A

• Question 224:

  Which is true about a Ticker object?

  A. The Ticker can be started and stopped through methods in the API.

  B. Direction and speed of scrolling can be controlled through methods in the API.

  C. A Ticker may be shared by several Displayable objects.

  D. Ticker is a subclass of Screen.

  Correct Answer: C

• Question 225:

  Given:

  a new record store rs, of type javax.microedition.rms.RecordStore containing zero records

  a method called addNewRecord that adds a record to rs

  And:

  21.

  addNewRecord("Amy");

  22.

  addNewRecord("Bill");

  23.

  addNewRecord("Candy");

  24.

  addNewRecord("Doug");

  25.

  rs.deleteRecord(1);

  26.

  rs.deleteRecord(3);

  27.

  addNewRecord("Ethan");

  28.

  addNewRecord("Frank");

  29.

  int nextRecNum = rs.getNextRecordID(); What is the value of nextRecNum?

  A. 6

  B. 7

  C. 4

  D. 5

  Correct Answer: B

• Question 226:

  Click the Exhibit button. Given the GameCanvas code:

  10.

  public void run() {

  11.

  try {

  12.

  Graphics g = getGraphics();

  13.

  Image dog = Image.createImage("/dog.png");

  14.

  Sprite s = new Sprite(dog, 98, 88);

  15.

  s.setPosition(0,0);

  16.

  while (gameActive) {

  17.

  s.setFrame(0);

  18.

  s.paint(g);

  19.

  flushGraphics();

  20.

  s.setFrame(1);

  21.

  s.paint(g);

  22.

  flushGraphics();

  23.

  }

  24.

  } catch (Exception ex) {

  25.

  //...

  31.

  }

  32.

  }

  Assuming that gameActive is true, and that run() is called as a result of a new thread's start() invocation, what is the result?

  

  A. An exception is thrown at runtime because of an error with the arguments to the Sprite constructor.

  B. An IndexOutOfBoundsException occurs due to an error in line 17 or line 20.

  C. The dog on the left side of the image file appears on the display, but the dog on the right side is never seen.

  D. Compilation fails because Sprite does NOT have a paint(Graphics g) method.

  E. An animation appears that continuously cycles between the two versions of the dog.

  Correct Answer: E

• Question 227:

  A MIDlet that is to be installed on a phone has different values for the MIDlet-Name property between the JAD file and the manifest in the JAR file. Which is true?

  A. The value in the JAD file overrides the value in the manifest.

  B. A dialog is presented to resolve the conflict.

  C. The MIDlet installation process will be aborted.

  D. The value in the manifest overrides the value in the JAD file.

  Correct Answer: C

• Question 228:

  Which two methods are available in both the low-level and high-level APIs? (Choose two.)

  A. getLayout()

  B. getTitle()

  C. isShown()

  D. setFullScreenMode()

  Correct Answer: BC

• Question 229:

  A suite is signed with a X.509 PKI certificate. The root certificate is not present in the device's keystore. What is the installation result?

  A. The JAD file is rejected. Installation fails.

  B. The JAD file is rejected. It installs in the untrusted domain.

  C. Authentication fails. It installs in the untrusted domain.

  D. Authentication fails. Installation fails.

  Correct Answer: D

• Question 230:

  Given:

  8.

  package javax.microedition.midlet;

  9.

  import javax.microedition.midlet.*;

  10.

  import javax.microedition.io.*;

  11.

  import java.io.*;

  12.

  13.

  public class Outlet extends MIDlet {

  14.

  public void startApp(){ }

  15.

  public void pauseApp(){ }

  16.

  public void destroyApp(boolean unconditional){ }

  17.

  }

  Which is true?

  A. The application will compile and will execute.

  B. Compilation fails because of an error in line 8.

  C. The application will compile and will NOT execute.

  D. The application will NOT compile.

  Correct Answer: C