Oracle 1Z0-869

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Oracle 1Z0-869 Exam Syllabus Topics:

Oracle Java Mobile Edition 1 Mobile Application Developer Certified Professional Sample Questions:

1. Given:
10. //...
20. Manager.playTone(ToneControl.C4, 100, -100);
21. System.out.println("done");
22. //...
Which is true?

A) done is printed directly after playTone() is called.
B) done is printed after playTone() completes.
C) Compilation fails.
D) An IllegalArgumentException is thrown at runtime.

2. 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 createRGBImage() to create an immutable Image from ARGB data with the desired values
C) use createImage() to create a mutable Image; first fill it with white pixels, then fill it with red pixels
D) use createImage() to create a mutable Image, then fill it with red pixels

3. Which is true when using multiple threads to access a record store?

A) The implementation coordinates access, ensuring that record stores will NOT be corrupted.
B) You CANNOT access a record store with multiple threads.
C) You must coordinate access to a record store to prevent data corruption.
D) You must lock a record store prior to access.

4. Click the Exhibit button.
Which two are true assuming this method is in a MIDlet? (Choose two.)

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

5. Which two are true about record store listeners? (Choose two.)

A) To listen for all events, three listeners must be registered.
B) When a record store is closed, listeners are removed.
C) A record store can have only one registered listener.
D) Listeners are notified if a record store is deleted.
E) A record store can have more than one registered listener.

Solutions: