What action can the device take when some Item objects on a Form do NOT fit when displayed?
A. delete the extra Item objects
B. display a runtime error
C. create an additional screen
D. create a vertical scroll bar
Given the MIDlet code:
11. try {
12.Class socketClass = Class.forName("java.net.Socket");
13.Object socket = socketClass.newInstance();
14.
} catch (ClassNotFoundException x) {
15.
} catch (InstantiationException y) {
16.
} catch (IllegalAccessException z) {
17.
}
Which is true?
A. It will compile, but results in a ClassNotFoundException.
B. It will not compile. Class.forName() is not supported by CLDC.
C. It will not compile. ClassNotFoundException and IllegalAccessException are not supported by CLDC.
D. It will compile, but results in an InstantiationException.
Which two are true about the MIDP user interface API? (Choose two.)
A. A single Command can have both a long and a short label.
B. There can be multiple Displayable objects shown on the display at the same time.
C. All UI events are sent to the application asynchronously.
D. There can be only one Display object per MIDlet.
E. Form is a multicast event source for CommandListener objects.
F. Canvas is a subclass of Screen.
Which creates a new record store of type javax.microedition.rms.RecordStore that can be shared between MIDlet suites?
A. openRecordStore("cust", false, AUTHMODE_ANY, false);
B. openRecordStore("cust", false, AUTHMODE_SHARED, false);
C. openRecordStore("cust", true, AUTHMODE_SHARED, false);
D. openRecordStore("cust", true, AUTHMODE_ANY, false);
Which three APIs may untrusted MIDlets use without explicit confirmation by the user? (Choose three.)
A. javax.microedition.io.HttpConnection
B. javax.microedition.io.PushRegistry
C. javax.microedition.rms
D. javax.microedition.lcdui
E. javax.microedition.media
Given:
10.
Player p = Manager.createPlayer(Manager.TONE_DEVICE_LOCATOR);
11.
VolumeControl vc = p.getVolumeControl();
12.
vc.setLevel(42);
13.
vc.setMute(true);
14.
System.out.println(vc.getLevel()); Which is printed to the console?
A. -1
B. 0
C. null
D. 42
Which two are true regarding the interaction of the Application Management Software (AMS) and a MIDlet when a connection notification is pushed to a device? (Choose two.)
A. If the notification is for a datagram, the AMS must guarantee that the datagram is made available to the MIDlet after the MIDlet is invoked. However, additional datagrams could be lost during the time required to start the MIDlet.
B. If the AMS starts a MIDlet in response to an inbound connection, the MIDlet must defer the responsibility of closing the connection to the AMS to prevent an IOException from occurring.
C. There are no guarantees provided by the AMS as to the state of a datagram or socket connection. The connection notification is intended to start the MIDlet to handle subsequent connections.
D. If the notification is for a socket, the connection must be provided to the MIDlet. However the server side of the connection may timeout before the MIDlet actually starts.
Given:
14.
Canvas canvas;
15.
// ...
24.
canvas.repaint(10,10,20,20);
25.
canvas.serviceRepaints();
What occurs when serviceRepaints() is called?
A. The application blocks until the repaint() method returns.
B. The application immediately calls the paint() method.
C. The application blocks until the paint() method returns.
D. The application immediately calls the repaint() method.
A MIDP 2.0 developer is building a game using the MIDP game API that requires user control over the direction of a Sprite within a GameCanvas. The developer wants to keep performance high and reduce memory use. Which two fulfill the goals? (Choose two.)
A. in the GameCanvas object, use actual key codes rather than mapped game action constants
B. implement keyPressed(), keyReleased(), and keyRepeated()
C. suppress key events for the GameCanvas object
D. poll for the current state of user key input in a loop, using getKeyStates()
Assume a particular JTWI phone supports server socket connections. A MIDlet running on the phone attempts to register a connection using:
PushRegistry.registerConnection(connection, midlet, filter); Assume connection, midlet, and filter are NOT null. The statement is executed and throws a ConnectionNotFoundException. What causes the exception?
A. The phone does NOT support push connections using server sockets.
B. The requested connection is already registered.
C. The syntax of connection is invalid.
D. The specified MIDlet does NOT exist.
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