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:

Question #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.

Question #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

Question #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.

Question #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.

Question #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: