Oracle 1Z0-869 Online Practice Questions and Exam Preparation

Oracle 1Z0-869 Online Questions & Answers

• Question 31:

  Which three statements are true regarding the handling of wireless connections? (Choose three.)

  A. Devices can only support one HttpConnection at a time; therefore, network access from multiple threads must be serialized.
  B. The connection could unexpectedly terminate while processing the input or output streams.
  C. Performing network operations on the same thread used by the display is likely to block refreshes of the display until the network operations complete.
  D. A network connection could interfere with other services on the device, such as the ability to receive phone calls or SMS on a phone.
  E. Network connections should never be performed on a separate thread, so problems can be handled quickly.
  B. The connection could unexpectedly terminate while processing the input or output streams.
  C. Performing network operations on the same thread used by the display is likely to block refreshes of the display until the network operations complete.
  D. A network connection could interfere with other services on the device, such as the ability to receive phone calls or SMS on a phone.

• Question 32:

  Given the MIDlet code:

  3.

  public void go() {

  4.

  try {

  5.

  doStuff();

  6.

  } catch(java.lang.IllegalAccessError e) {

  7.

  aForm.append("An Error");

  8.

  }

  9.

  }

  Assuming the aForm variable on line 7 is a correctly initialized Form and set to the current display, what is the result?

  A. Compilation fails due to a problem on line 7.
  B. The MIDlet fails at runtime due to a problem on line 6.
  C. The MIDlet fails at runtime due to a problem on line 7.
  D. An Error is printed to the display if an IllegalAccessError occurs.
  E. Compilation fails due to a problem on line 6.
  E. Compilation fails due to a problem on line 6.

• Question 33:

  Click the Exhibit button. What is the result?

  

  A. myForm contains the string "run count: 0".
  B. myForm contains the string "run count: 1".
  C. An exception is thrown at runtime.
  D. myForm contains the string "waiting...".
  E. myForm contains the string "run count: 2".
  B. myForm contains the string "run count: 1".

• Question 34:

  Drag Drop

  Assuming that rs is a valid and open record store, place the correct line of code on line 20 to complete the code fragment.

  Select and Place:

  

  

• Question 35:

  Which three classes are subclasses of Item? (Choose three.)

  A. List
  B. Alert
  C. TextBox
  D. TextField
  E. Gauge
  F. ChoiceGroup
  G. Form
  D. TextField
  E. Gauge
  F. ChoiceGroup

• Question 36:

  Click the Exhibit button.

  Which two are true assuming this method is in a MIDlet? (Choose two.)

  

  A. The Chocolate Prefs choice is never displayed to the user.
  B. Compilation fails due to a problem with code related to event handling.
  C. The text "You made a choice" is displayed immediately after the user makes a selection.
  D. The user can select more than one type of chocolate.
  E. An exception occurs at runtime due to a problem related to the event handling code.
  F. Anonymous inner classes must NOT be used as event handlers within a MIDlet.
  C. The text "You made a choice" is displayed immediately after the user makes a selection.
  D. The user can select more than one type of chocolate.

• Question 37:

  Click the Exhibit button. Which produces the results shown in device A and device B?

  

  A. A: g.drawString("Gray Flyer",0,0,Graphics.TOP | Graphics.BASELINE);
  B. g.drawString("Gray Flyer",0,0,Graphics.HCENTER | Graphics.BOTTOM);
  C. A: g.drawString("Gray Flyer",0,0,Graphics.LEFT | Graphics.BASELINE);
  D. g.drawString("Gray Flyer",0,0,Graphics.LEFT | Graphics.HCENTER);
  E. A: g.drawString("Gray Flyer",0,0,Graphics.TOP | Graphics.LEFT);
  F. g.drawString("Gray Flyer",0,0,Graphics.TOP | Graphics.HCENTER)
  G. A: g.drawString("Gray Flyer",0,0,Graphics.LEFT | Graphics.TOP);
  H. g.drawString("Gray Flyer",0,0,Graphics.TOP | Graphics.BASELINE);
  C. A: g.drawString("Gray Flyer",0,0,Graphics.LEFT | Graphics.BASELINE);

• Question 38:

  Given:

  10. //...

  20.

  int[] foo = new int[10000];

  21.

  foo = null;

  22.

  System.gc();

  23.

  //...

  Which is true once the program execution reaches line 23?

  A. The garbage collector CANNOT reclaim the memory allocated to foo because the reference is nulled out.
  B. The garbage collector is triggered but there are no guarantees that any memory has been reclaimed.
  C. The garbage collector suspends the program until more memory becomes available.
  D. The garbage collector is triggered and memory is guaranteed to be reclaimed.
  B. The garbage collector is triggered but there are no guarantees that any memory has been reclaimed.

• Question 39:

  Which three APIs may untrusted MIDlets use without explicit confirmation by the user? (Choose three.)

  A. javax.microedition.io.HttpConnection
  B. javax.microedition.io.PushRegistry
  C. javax.microedition.rms
  D. javax.microedition.lcdui
  E. javax.microedition.media
  C. javax.microedition.rms
  D. javax.microedition.lcdui
  E. javax.microedition.media

• Question 40:

  What are the rules for the look and feel of the user interface components?

  A. The user interface always looks exactly as it does in the MIDP Reference Implementation.
  B. The user interface look and feel may be drastically different on different devices.
  C. The dimensions of all the user components are always the same on any device, even if they look different.
  D. The user interface is always in monochrome, so the developer should NOT use color.
  B. The user interface look and feel may be drastically different on different devices.