Oracle 1Z0-869 問題集

質問 1：
DRAG DROP
Click the Task button.
Place the connection strings on their corresponding connection interfaces.

正解：


質問 2：
Which is true about PushRegistry.registerAlarm()?
A. JTWI devices may choose NOT to implement PushRegistry.registerAlarm().
B. PushRegistry.registerAlarm() works independently of the network protocols available for push connections.
C. PushRegistry.registerAlarm() supports several outstanding activation times per MIDlet.
D. PushRegistry.registerAlarm() is overloaded to play audio file arguments.
正解：B

質問 3：
Which two can the developer define for a TextField? (Choose two.)
A. color
B. shape
C. input constraints
D. font
E. maximum number of characters
正解：C,E

質問 4：
Given:
1 . import javax.microedition.midlet.*;
2 . public class Foo extends MIDlet {
3 . public void go() {
4 . try {
5 . doStuff();
6 . } catch(java.lang.NoClassDefFoundError e) { }
7 . }
8 . void doStuff() { }
9 . public void destroyApp(boolean b) { }
1 0. public void pauseApp() { }
1 1. public void startApp() {go();}
1 2. }
Assuming the application is targeted for CLDC 1.1, what is the result?
A. Compilation fails because of a problem in line 8.
B. Compilation fails because the class does not contain the required method implementations.
C. Compilation succeeds.
D. Compilation fails because of a problem in line 6.
正解：C

質問 5：
Which two are true about class file verification as defined by the CLDC specification?
(Choose two.)
A. Verification is NOT required.
B. Verification can use the same implementation as defined in the JVM specification.
C. Verification can use a custom implementation.
D. Verification is completed at compile time and no further verification is necessary.
正解：B,C

質問 6：
Click the Exhibit button.
Given the GameCanvas code:
1 0. public void run() {
1 1. try {
1 2. Graphics g = getGraphics();
1 3. Image dog = Image.createImage("/dog.png");
1 4. Sprite s = new Sprite(dog, 98, 88);
1 5. s.setPosition(0,0);
1 6. while (gameActive) {
1 7. s.setFrame(0);
1 8. s.paint(g);
1 9. flushGraphics();
2 0. s.setFrame(1);
2 1. s.paint(g);
2 2. flushGraphics();
2 3. }
2 4. } catch (Exception ex) {
2 5. //...
3 1. }
3 2. }
Assuming that gameActive is true, and that run() is called as a result of a new thread's start() invocation, what is the result?

A. An exception is thrown at runtime because of an error with the arguments to the Sprite constructor.
B. The dog on the left side of the image file appears on the display, but the dog on the right side is never seen.
C. Compilation fails because Sprite does NOT have a paint(Graphics g) method.
D. An IndexOutOfBoundsException occurs due to an error in line 17 or line 20.
E. An animation appears that continuously cycles between the two versions of the dog.
正解：E

質問 7：
Given the MIDlet code:
1 1. public void startApp() {
1 2. Form f = new Form("hello");
1 3. Display.getDisplay(this).setCurrent(f);
1 4. System.gc();
1 5. System.exit(0);
1 6. f.append("foo");
1 7. }
What is the result?
A. The application runs, and foo prints to the current display.
B. Compilation fails.
C. The application runs, but line 15 is ignored.
D. The application runs without exception, but foo is not printed.
E. The application runs, but throws an exception at runtime.
正解：E

質問 8：
Given:
HttpConnection conn
(HttpConnection) Connector.open("http://internalsite:8080/");
and
MIDlet-Permission-Opt is set to javax.microedition.io.Connector.http in the JAD file.
What is the result?
A. The application will install, but the application will not execute.
B. The application will not install in the untrusted domain.
C. The application will install and execute without explicit user interaction.
D. The application will install and execute with explicit user interaction.
正解：D

質問 9：
Which three are true for ChoiceGroup? (Choose three.)
A. You can associate a Command object with a ChoiceGroup.
B. When using Choice.EXCLUSIVE, there must always be an element selected.
C. When using images with a ChoiceGroup, all entries must specify an image.
D. Images specified for entries may be mutable or immutable.
E. ChoiceGroup.size() returns the index value of the last entry in a ChoiceGroup.
F. You can specify different fonts for each ChoiceGroup entry.
正解：A,B,D