Oracle 1Z0-869 試験概要:

Oracle 1Z0-869 試験シラバストピック:

Oracle Java Mobile Edition 1 Mobile Application Developer Certified Professional 認定 1Z0-869 試験問題：

1. What is the minimum number of simultaneously running threads that a JTWI 1.0 device must support for each MIDlet suite?

A) two running threads for each class of the MIDlet suite
B) 1
C) 10
D) 3

2. What is true when an enumeration applies both a RecordFilter class and
RecordComparator class on a record store?

A) The records that match the search criteria in RecordComparator will be returned using the ordering defined by RecordFilter.
B) An enumeration CANNOT apply both a RecordFilter and RecordComparator.
C) All records will always be available as part of the enumeration result set.
D) The return order of the result set is undefined.
E) The records that match the search criteria in RecordFilter will be returned using the ordering defined by RecordComparator.

3. Given:
5 0. class MyGameCanvas extends Canvas {
5 1. //...
6 0. public MyGameCanvas() {
6 1. int width1 = getWidth();
6 2. int height1 = getHeight();
6 3. //...
7 0. setFullScreenMode(true);
7 1. //...
8 0. int width2 = getWidth();
8 1. int height2 = getHeight();
8 2. //...
9 0. }
What is true about width1, height1 and width2, height2?

A) width1 is always equal to width2.
B) height1 is always equal to height2.
C) The call to setFullScreenMode() is ignored because the dimensions have already been set.
D) The system tries to provide maximum visible area to the MIDlet and these dimensions are width2, height2.

4. Click the Exhibit button.
What is visible on the display when this MIDlet is executed?

A) The screen continuously switches back and forth between black and white.
B) A white screen is shown momentarily, and then a black screen is shown.
C) A java.lang.RuntimeException is thrown.
D) A black screen is shown momentarily, and then a white screen is shown.

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

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

質問と回答：