J2ME - Java Platform Micro Edition MCQ Questions Answers

1. Which of the following are a part of the CLDC expert group?

2. Which of the following devices is served by CDC?

3. Which of the following is a CDC based profiles?

4. According to JTWI, what is the recommended size for a heap?

5. According to JTWI, what is the recommended screen size?

6. Which of the following features would the target devices for CLDC have?

7. The callback method that is invoked for a specific item event is _____________.

8. Which of the following fall under the scope of CLDC?

9. The CLDC specific classes are defined in a package called:

10. MIDP specification requires support for which of the following auth schemes?

11. Which of the following features are absent in CLDC as compared to JVM?

12. Which of the following are the optional packages available with CDC?

13. Which of the following statements is incorrect regarding the Generic Connection framework?

14. Which of the following devices is served by CDC?

15. Which of the following capabilities are provided to device manufacturers by embedded Java technology?

16. Which of the following are a part of the CLDC expert group?

17. An attribute is defined in both JAD and MIDlet JAR files. Which one will take precedence over the other?

18.

State whether true or false:

Migration of code from J2SE to CDC would be a straight forward process.

19. Which of the following statements with respect to Java ME profiles is incorrect?

20.

Which of the following methods are defined as a part of CLDC Internationalization?

1.new InputStreamReader(InputStream)

2.new InputStreamReader( InputStream,String)

3.new OutputStreamWriter(OutputStream)

4.new OutputStreamWriter(OutputStream, String)

21. Which of the following form a part of CLDC?

22. In J2ME, the approximate number of classes taken from J2SE java.io is:

23. In J2ME, the approximate number of classes taken from J2SE java.util is:

24. Which of the following is designed for multi-processor enterprise server environments that require maximum program execution speed, 64-bit support and very large memory heaps?

25. Which of the following functions fall under the scope of J2ME profiles?

26. Which of the following statements are correct regarding Xlet application programming model?

27. Which of the following migration of codes is possible?

28. Which of the following is used to specify the Push enable MIDlets?

29. Which of the following profiles give full AWT and applet support?

30. Identify the incorrect statement regarding CLDC:

31. Mids server should only download data which has a MIME type of:

32. Which of the following could be the reasons for the introduction of the Generic Connection framework?

33. Which of the following devices is served by CLDC?

34. According to JTWI, what is the standard size for a JAD file?

35. According to JTWI, what is the standard size for a MIDlet jar file?

36.

What would you infer from the following code?

1.MessageConnection conn;

2.

3. public void startApp()

4. {

5.

6. try

7. {

8. conn = (MessageConnection)Connector.open("cbs://:3382");

9. }

10. catch(Exception e)

11. {

12. //Some exception handling

13. }

14. }

15.

16. public void run()

17. {

18. Message msg = conn.receive();

19. conn.send(msg);

20. }

37. The character limit for an SMS Text message is:

38. Which of the following statements is correct regarding RecordStores?

39. Which of the following packages constitute the Java ME?

40. Which of the following image formats is supported by JTWI 1.0?

41. Which of the following statements are correct regarding CLDC security?

42. Which of the following authmodes can be used to share a RecordStore between multiple MIDlets?

43. The CLDC properties are defined in:

44. Which of the following in CLDC is not derived from J2SE?

45. For a device to be JTWI MMAPI enabled, it must support:

46. Which of the following statements regarding configuration in Java ME is incorrect?

47. SMS Push is not required for JTWI.

48. Which of the following methods would be suitable in opening a connection using the Generic Connection framework?

49. Which of the following are not Java ME Configurations?

50.

State whether true or false:

A MIDlet can retrieve its environment properties.

51. Which of the following is not required for JTWI?

52. Which of the following is in sync with the sandbox model?

53. What would be the values for boxes 1 and 2 respectively in the given Generic Framework figure?

54. The default mode for an open connection is:

55. The MIDlet permission is defined in a JAD file using __________.

56. Which of the following is true for Technology Compatibility Kit(TCK)?

57.

Which of the following is designed for resource-constrained devices like consumer products and embedded devices?

58.

The following are the two statements related to Java Community Process:

Statement X: A Java specification begins life as a Java Community Process

Statement Y: The specifications for Java standard, enterprise and micro platforms are developed under the direction of JCP

Which of the following options is correct?

59. The minimum number of threads supported by JTWI complaint implementations are:

60. Which of the following is designed for very small memory scenarios, typically 128 KB to 512 KB for the Java application environment?

61. Which of the following is designed for single-processor desktop environments that require faster start-up time and a smaller memory footprint?

62. Which of the following is not the characteristic feature of the target devices of CDC?

63. Which of the following profile is supported by CLDC?

64. Which of the following are Java ME profiles?

65. Which of the following are not supported by the CLDC 1.1 VM?

66. The RecordStore can be shared among multiple MIDlets.

67. The version of CLDC in a JAD file can be known by the:

68. The constant to create a modal alert is:

69. Which of the following is not a characteristic features of the target devices of CDLC?

70.

What will happen on attempting to compile and run the following code?

public class ERMidlet extends MIDlet implements CommandListener, Runnable

{

        private Display mDisplay;

        private Form myForm;

        private Command exitCommand;

        private StringItem myString;

        ERMidlet()

        {

                myForm = new Form("Expert Rating Exam");

                exitCommand = new Command("Exit",Command.EXIT, 0);

                myString = new StringItem("15");

                myForm.append(myString);

                myForm.addCommand(exitCommand);

                myForm.setCommandListener(this);

        }

        public void startApp()

        {

                mDisplay = Display.getDisplay(this);

                mDisplay.setCurrent(myForm);

        }

        public void commandAction (Command c, Displayable s)

        {

                destroyApp(false);

                notifyDestroyed();

        }

        public void run()

        {

        }

        public void pauseApp()

        {

        }

        public void destroyApp(boolean unconditional)

        {

        }

}

71. Which of the following is not addressed by MIDP?