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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. //...
2 0. int[] foo = new int[10000];
2 1. foo = null;
2 2. System.gc();
2 3. //...
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 and memory is guaranteed to be reclaimed.
C) The garbage collector is triggered but there are no guarantees that any memory has been reclaimed.
D) The garbage collector suspends the program until more memory becomes available.

2. Which statement is true about TiledLayer and Sprite objects maintained by a LayerManager object?

A) TiledLayer objects are always added as the background layer.
B) Either Sprite or TiledLayer objects may be inserted at a unique position in the LayerManager.
C) Sprite objects are always added as the background layer.
D) Once either Sprite or TiledLayer objects are added, the order can be changed only by creating and adding to a new LayerManager.

3. Which two are true when deleting a record store? (Choose two.)

A) The record store must be open prior to calling deleteRecordStore().
B) The record store must be closed prior to calling deleteRecordStore().
C) For any registered listener of the record store, recordDeleted() will be called.
D) If the record store is open, an exception will be thrown.

4. What is guaranteed by CLDC regarding time zones?

A) GMT and UTC must be supported.
B) At least one time zone must be supported.
C) UTC is always supported.
D) The local time zone is always supported.

5. Given:
1 5. String addr = "sms://+14155557296";
1 6. MessageConnection conn
1 7. = (MessageConnection) Connector.open(addr);
1 8. // insert code here
1 9. message.setPayloadData(imageBytes);
Assume imageBytes is a valid byte array.
Which statement, inserted at line 18, causes the rest of the code fragment to compile correctly?

A) Message message
conn.newMessage(MessageConnection.BINARY_MESSAGE);
B) BinaryMessage message = new BinaryMessage();
C) Message message = new BinaryMessage();
D) BinaryMessage message = (BinaryMessage)
conn.newMessage(MessageConnection.BINARY_MESSAGE);

Solutions: