Consider int sophie = 5; Which of the following are reference variables? (Note t

Question

Consider

int sophie = 5;

Which of the following are reference variables? (Note that this is a multiple answer question.)

Question 2

Consider

TV livingRoom = null;

TV den;

new TV();

den = new TV();

Enter the line number where den is declared. Enter x if there is no such line.

Question 3

Consider

TV livingRoom = null;

TV den;

new TV();

den = new TV();

Enter the first line number in which an object refence is assigned to a variable. Enter x if there is no such line.

Question 4

Consider

TV livingRoom = null;

TV den;

new TV();

den = new TV();

livingRoom = new TV();

Write a statement that calls a method to increase the volume of the den's TV. (Use no spaces in your answer.)

Question 5

A class is to an object as

Question 6

What operator creates an object?

Question 7

Constructors differ from other methods in that they

Question 8

Consider

Date today;

today = new Date();

Date tomorrow;

tomorrow = today;

Which of the following is correct?

Question 9

Consider

int sophie = 5;

Which of the following are data types? (Note that this is a multiple answer question.)

Question 10

Consider

TV livingRoom = null;

TV den;

new TV();

den = new TV();

Enter the line number of the first creation of an object. Enter x if there is no such line.

Question 11

Consider

int sophie = 5;

Which of the following variables are declared as a primitive type? (Note that this is a multiple answer question.)

Question 12

Consider

int sophie = 5;

Which of the following are correct?   (Note that this is a multiple answer question.)

Consider

  TV gameroom;  

  String favProgram = "Twilight Zone";  

int sophie = 5;

Which of the following are reference variables? (Note that this is a multiple answer question.)

Explanation / Answer

Question1:
ANS: Reference variables are: favprogram &.

Question 2:
Answer: TV den;

Actually den is an object(instance of TV class) that is Declared
in Second line.
And Creating references to an object in 3rd Line.

Question 3:
Ans:
Line 4.den=new TV();
here,creating class that have some Member varibles.
and object "den" referring to the Member variables.

Question 4:

Answer:
dens.increaseVoulme();

Question 5:
Usually class is a blue Print for an object.

Question 6:
New operator.

Question 7:
Ans: Constructors have No return Type.

Question 8:
Ans: a) New Date Object is created with the same values as today's Date Object,
And that object is copied into tomorrow's Memory.

Question 9:
Ans: datatypes are : string and int

Question 10:
Ans: Line 1.created an object called "livingRoom" that references to null memory.

Question 11:
Ans: int sophie=5;

Question 12:
Ans:
D.Gameroom references to (ponits to)TV object(or contains the value null).
favprogram actually contains the characters "Twilight Zone".
Sophie Actually contains the Numeric value '5'.

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