java final exam

Test: Java Fundamentals Final Exam

Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct answer.

Top of FormSection 4

(Answer all questions in this section)

1.Which of the following declarations are correct?Mark for Review(1) Points

(Choose all correct answers)

double duty; (*)

float loan; (*)

boolean value = 12;

int start = 34, 3nd = 99;

Correct

2.Which line of Java code will assign the value of the square root of 11 to a variable named a?Mark for Review(1) Points

double a=11^(1/2);

double a=sqrt(11);

int a=Math.sqrt(11);

double a=Math.sqrt*11;

double a=Math.sqrt(11); (*)

Correct

3.The ______________ is the location into which you will store and save your files.Mark for Review(1) Points

Perspective

Workspace (*)

Editor

None of the above

Correct

4.A workspace is:Mark for Review(1) Points

The physical location onto which you will store and save your files.

The location where all projects are developed and modified.

The location where you can have one or more stored perspectives.

All of the above. (*)

Correct

5.A workspace can not have more than one stored projects. True or false?Mark for Review(1) Points

True

False (*)

Correct

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6.You can return to the Eclipse Welcome Page by choosing Welcome from what menu?Mark for Review(1) Points

File

Edit

Help (*)

Close

Correct

7.A perspective is described as:Mark for Review(1) Points

A combination of views and editors (*)

A combination of views and windows

A combination of editor tabs

None of the above

Incorrect. Refer to Section 4 Lesson 1.

8.Which of the following defines a driver class?Mark for Review(1) Points

Contains a main method and other static methods. (*)

Contains classes that define objects.

Contains a main method, a package, static methods, and classes that define objects.

None of the above.


9.Which of the following defines an object class?Mark for Review(1) Points

Contains a main method and other static methods.

Contains classes that define objects. (*)

Contains a main method, a package, static methods, and classes that define objects.

None of the above.

Correct

10.Consider the following code snippet.

What is printed?Mark for Review(1) Points

88888 (*)

88888888

1010778

101077810109

ArrayIndexOutofBoundsException is thrown


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11.Consider the following code snippet.

What is printed?Mark for Review(1) Points

Cayrbniz

CayrbnizCayrbniz

yr (*)

ay

ArrayIndexOutofBoundsException is thrown


12.Given the code:

String s = new String("abc");

Which of the following statements will change the length of s to the largest length?Mark for Review(1) Points

s.trim()

s.replace("a", "aa")

s.substring(2)

s.toUpperCase()

None of the above will change the length of s. (*)

Correct

13.What is printed by the following code segment?

Mark for Review(1) Points

\\\\

\\\\\\\ (*)

\\\\\\\\\\\\\\

\\

Correct

14.The following code is an example of creating a String reference:

String s;

True or false?Mark for Review(1) Points

True (*)

False

Correct

Section 5


15.How many times will the following loop be executed?What is the value of x after the loop has finished?What is the value of count after the loop has finished?

int count = 17;int x = 1;while(count > x){x*=3;count-=3;}Mark for Review(1) Points

4; 8; 27

3; 27; 8 (*)

5; 27; 8

5; 30; 5

3; 9; 11

Correct






16.One advantage to using a while loop over a for loop is that a while loop always has a counter. True or false?Mark for Review(1) Points

True

False (*)


17.Updating the input of a loop allows you to implement the code with the next element rather than repeating the code always with the same element. True or false?Mark for Review(1) Points

True (*)

False

Correct

18.Which of the following could be a reason to use a switch statement in a Java program?Mark for Review(1) Points

Because it allows the code to be run through until a certain conditional statement is true.

Because it allows the program to run certain segments of code and neglect to run others based on the input given. (*)

Because it terminates the current loop.

Because it allows the user to enter an input in the console screen and prints out a message that the user input was successfully read in.

Correct

19.Determine whether this boolean expression evaluates to true or false:

!(36||6= 5) ? 0 : 10;

fee = ( balance >= 500) ? 10 : 0;

fee = ( balance > 5) ? 10 : 0;



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21.Which of the following declares a one dimensional array name scores of type int that can hold 14 values?Mark for Review(1) Points

int scores;

int[] scores=new int[14]; (*)

int[] scores=new scores int[14];

int score= new int[14];


22.What is the output of the following segment of code?

int array[][] = {{1,2,3},{3,2,1}};for(int i=0;i

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