Oracle 1Z0-869 Online Practice Questions and Exam Preparation

Oracle 1Z0-869 Online Questions & Answers

• Question 251:

  Given:

  1.

  import javax.microedition.midlet.*;

  2.

  public class Foo extends MIDlet {

  3.

  public void go() {

  4.

  ThreadGroup x = Thread.currentThread().getThreadGroup();

  5.

  int numThreads = x.activeCount();

  6.

  Thread[] threads = null;

  7.

  x.enumerate(threads);

  8.

  }

  9.

  public void destroyApp(boolean b) { }

  10.

  public void pauseApp() { }

  11.

  public void startApp() { }

  12.

  }

  What is the result?

  A. Compilation fails because of an error on a line other than 4 or 7.
  B. Compilation fails because of an error on line 7.
  C. Compilation succeeds and the program runs without errors.
  D. Compilation fails because of an error on line 4.
  E. Compilation succeeds, but the program produces a runtime exception or error.
  D. Compilation fails because of an error on line 4.

• Question 252:

  Given:

  10. //...

  20.

  try {

  21.

  Hashtable table = new Hashtable();

  22.

  for (;;) table.put(new Object(), new Object());

  23.

  } catch (OutOfMemoryException e) {

  24.

  Display.getDisplay().setCurrent(new Alert("Out of Memory!"));

  25.

  }

  26.

  //... Which is true?

  A. An exception is thrown at runtime but there is no guarantee an alert will be shown to the user.
  B. Compilation fails.
  C. The program hangs at line 22.
  D. Out of Memory! is printed to the system console.
  A. An exception is thrown at runtime but there is no guarantee an alert will be shown to the user.

• Question 253:

  A MIDlet suite is signed using X.509 PKI. Which encoding format must be used for the certificate entries in the JAD file?

  A. binary
  B. none
  C. base64
  D. yEnc
  C. base64

• Question 254:

  Click the Exhibit button.

  The red collision rectangle around each Sprite in the image is NOT part of the actual image. The two Sprite objects intersect in the application precisely as shown.

  Which two are true? (Choose two.)

  

  A. The most efficient way to detect collision is to use collision detection based solely on the collision rectangles.
  B. For the two Sprite objects to be considered in collision, collidesWith() must be invoked on both objects.
  C. If Sprite 1 is being tested for collision with Sprite 2 using pixel-level collision detection, the two Sprite objects will NOT be in collision.
  D. For the two Sprite objects to be considered in collision, each Sprite must have no more than one frame.
  A. The most efficient way to detect collision is to use collision detection based solely on the collision rectangles.
  C. If Sprite 1 is being tested for collision with Sprite 2 using pixel-level collision detection, the two Sprite objects will NOT be in collision.

• Question 255:

  Which two specifications are mandatory in JTWI 1.0? (Choose two.)

  A. Location API
  B. MIDP 2.0
  C. WMA 1.1
  D. WMA 1.0
  E. MMAPI 1.1
  B. MIDP 2.0
  C. WMA 1.1

• Question 256:

  Which two are true about record stores? (Choose two.)

  A. If two MIDlet suites each have a record store with the same name, then those suites CANNOT share those identically named record stores.
  B. A MIDlet CANNOT access a given record store using multiple simultaneous threads.
  C. Record store names are case sensitive.
  D. The API does NOT provide locking operations for record stores.
  E. MIDlet suites that contain shared record stores are identified by using attributes from that suite's JAR file.
  C. Record store names are case sensitive.
  D. The API does NOT provide locking operations for record stores.

• Question 257:

  Drag Drop

  Given:

  9. Player p = Manager.createPlayer("http://webserver/music.mp3");

  10. p.setLoopCount(5);

  11. p.start();

  12. p.stop();

  13. p.close();

  What is the order of the states that the Player goes through?

  Select and Place:

  

  

• Question 258:

  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. In class B, no new events will be delivered to the application until after the commandAction() method completes.
  C. The commandAction() method code in class B is compliant with the event-handling approach recommended in the MIDP 2.0 specification.
  D. The event-handling in class A will NOT print done with action until after the run() method has completed.
  E. The commandAction() method code in class A is NOT guaranteed to be portable across all MIDP 2.0-compliant devices.
  F. The event-handling mechanism in class A allows multiple command events to be delivered to the application in parallel.
  A. In class A, no new events will be delivered to the application until after the commandAction() method completes.
  B. In class B, no new events will be delivered to the application until after the commandAction() method completes.

• Question 259:

  Which four are absent from the CLDC virtual machine? (Choose four.)

  A. class file verification
  B. thread groups and daemon threads
  C. asynchronous exceptions
  D. multi-threading
  E. custom class loaders
  F. object.finalize() method
  G. inner and anonymous classes
  B. thread groups and daemon threads
  C. asynchronous exceptions
  E. custom class loaders
  F. object.finalize() method

• Question 260:

  What is guaranteed by CLDC regarding time zones?

  A. UTC is always supported.
  B. At least one time zone must be supported.
  C. The local time zone is always supported.
  D. GMT and UTC must be supported.
  B. At least one time zone must be supported.