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

1. Given that rs is an object of type javax.microedition.rms.RecordStore and that record 1 exists in rs, and
2 1. String one = "short String";
2 2. String two = "a much longer String";
2 3. byte [] small = one.getBytes();
2 4. byte [] big = two.getBytes();
2 5. rs.setRecord(1, big, 0, big.length);
2 6. rs.setRecord(1, small, 0, small.length);
What is the result?

A) Record 1 contains "short Stringr String."
B) Record 1 contains "short String."
C) Record 1 contains "a much longer String."
D) Compilation fails.
E) An exception is thrown at runtime.

2. What is guaranteed by CLDC regarding time zones?

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

3. Given the MIDlet code:
1 1. try {
1 2.Class socketClass = Class.forName("java.net.Socket");
1 3.Object socket = socketClass.newInstance();
1 4. } catch (ClassNotFoundException x) {
1 5. } catch (InstantiationException y) {
1 6. } catch (IllegalAccessException z) {
1 7. }
Which is true?

A) It will compile, but results in a ClassNotFoundException.
B) It will not compile. ClassNotFoundException and IllegalAccessException are not supported by CLDC.
C) It will not compile. Class.forName() is not supported by CLDC.
D) It will compile, but results in an InstantiationException.

4. Given the MIDlet code:
2 0. String arg = "telepathy:op=mind.read, target=James.Gosling";
2 1. Connection conn = Connector.open(arg);
Assume telepathy is an unsupported protocol. Which is true?

A) Compilation fails.
B) The user is presented with an alert.
C) An exception is thrown at runtime.
D) The system quietly ignores the request.

5. Which three are top level interfaces in the javax.wireless.messaging package? (Choose three.)

A) Connector
B) MessageConnection
C) MessageHandler
D) Datagram
E) Message
F) MessageListener

Solutions: