Question

QUESTION 11

1. Which of the following could never be found in the file NewClass.java?

   		public NewClass() { message = “Hello World!”; }
   		public String title = “New Class”;
   		public void doSomething() { doSomethingElse(); }
   		public OtherClass() { message = “Hello, World! Good to see you again!”; }

2 points   

QUESTION 12

1. Match the terms to the corresponding definition below.

   -       A.       B.       C.       D.       E.       F.       G.       H.    Visual components that the user sees when running an app       -       A.       B.       C.       D.       E.       F.       G.       H.    Components that wait for events outside the app to occur       -       A.       B.       C.       D.       E.       F.       G.       H.    Component that makes aspects of an app available to other apps       -       A.       B.       C.       D.       E.       F.       G.       H.    Activities with no user interface

   A. Activity B. Regular App C. Broadcast Receiver D. Broadcast Sender E. Content Receiver F. Content Provider G. Services H. Background Service

2 points   

QUESTION 13

1. Which of the following is NOT true when overriding a method?

   		The subclass is given a method of the same signature as a superclass method.
   		The superclass method is hidden when called from the subclass.
   		The superclass method can no longer be used.
   		You can override any method of the superclass.

2 points   

QUESTION 14

1. Which is the escape character used in Java’s String object?

   		Percentage sign (%)
   		Tilde (~)
   		Backslash (\)
   		Forward slash (/)

2 points   

QUESTION 15

1. Broadcast Receivers are terminated when the event they are waiting for occurs.

   True

   False

2 points   

QUESTION 16

1. Motorola’s MOTODEV Studio allows the user to choose the Android version(s) the app supports.

   True

   False

2 points   

QUESTION 17

1. Class instance variables must be declared at the beginning of the class definition.

   True

   False

2 points   

QUESTION 18

1. Match the terms to the corresponding definition below.

   -       A.       B.       C.       D.       E.       F.       G.       H.    A set of files on disk to help organize projects       -       A.       B.       C.       D.       E.       F.       G.       H.    An editor for working with specific file types       -       A.       B.       C.       D.       E.       F.       G.       H.    A Window that displays some aspect of the project       -       A.       B.       C.       D.       E.       F.       G.       H.    An arrangement of windows in the Eclipse IDE

   A. Workspace B. Workplace C. Workarea D. Workbench E. Perspective F. Outlook G. Point of View (POV) H. View

2 points   

QUESTION 19

1. A constructor is the same as any other method definition EXCEPT for what?

   		A constructor includes an optional argument list.
   		A constructor includes an optional access modifier, usually public.
   		A constructor includes a return type.
   		A constructor places arguments within parentheses ().

2 points   

QUESTION 20

1. The Timer class method schedule uses which of the following units for its delay value?

   		Hours
   		Minutes
   		Seconds
   		Milliseconds

Answer 1

11. public OtherClass() {
message = “Hello, World! Good to see you again!”;
} can never be found in the file NewClass.java because only one class can be public here, and that would be the class file, i.e. filename

12.

Visual components that the user sees when running an app :Regular App

Components that wait for events outside the app to occur : Broadcast Receiver

Component that makes aspects of an app available to other apps : Broadcast Sender

Activities with no user interface : Services

13.

The superclass method can no longer be used. : This is incorrect as you can still use superclass methods using super keyword.

14. Backslash (\) is the escape character, example : '\n' is new line escaper character.

15. Broadcast Receivers are terminated when the event they are waiting for occurs. - FALSE, They continue listening for other events as well.

17. Class instance variables must be declared at the beginning of the class definition. // yes, but not necessarily the important thing is, to create instance variables those must be declared outside any other methods and within this class.

example

public class example{

int id; // instance variable

String name;//instance variable

void fun(){

int a; // local variable and not an instance variable

}

}

19. A constructor does not include a return type.