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

1. A mobile application developer wants to reduce memory use and improve the speed of a game using the MIDP 2.0 Game API. Which three are valid, legal ways to help fulfill the developer's goal? (Choose three.)

A) keyPressed(int keyCode) {
// code to process the key press event
}
B) GameCanvas game = new GameCanvas(true);
//suppress key events
C) layerManager.setViewWindow(0,0, getWidth() + 50, getHeight() + 50);
D) mySprite.collidesWith(otherSprite, false);
//pixel level false
E) while(gameActive) {
int keyStates = getKeyStates();
if ((keyStates & LEFT_PRESSED) != 0) {
// code to move a Sprite
}

2. DRAG DROP
Click the Task button.
Match the exceptions and errors with the platforms.
You must label ALL exceptions and errors with one of the three platform options.

3. Which three are goals of the CLDC specification? (Choose three.)

A) It is intended as a systems programming environment.
B) It allows device manufacturers to build more extensible devices.
C) It allows developers to port existing applications to mobile devices.
D) It is intended to be an application development platform.
E) It does NOT provide device-specific APIs.

4. Given:
12. canvas.repaint(x1,y1,wd,ht);
13. canvas.repaint(x2,y2,wd,ht);
14. canvas.serviceRepaints();
Which two are true? (Choose two.)

A) serviceRepaints() blocks waiting for paint() to return.
B) paint() is always called twice, once for each repaint() request.
C) If the two regions specified in repaint() overlap, repaint() may attempt to paint the union of the two areas.
D) paint() is called three times, once for each repaint() and once for serviceRepaints().

5. wav is a content type supported on a device that executes:
1 0. Player p;
1 1. p = Manager.createPlayer("http://foobar.sun.com/sound.wav");
1 2. p.prefetch();
Which is true?

A) No exception is thrown at runtime. No sound is played.
B) sound.wav is played on the device.
C) The result is device-dependent.
D) An exception is generated at runtime.

Solutions: