Computer Science

Question 1 Unsaved

Select the line of Java code that will correctly declare a float variable named average and assign the variable a value of 3.4.

Question 1 options:

None of the above
int average; average = 3.4;
int average = 3.4D;
int average = 3.4f;
int average = 3.4;

Save

Question 2 (1 point)

Question 2 Unsaved

Select the correct line of Java code to assign 1000 to an int variable named myValue.

Question 2 options:

int myValue = 1000;
int myValue = 0x3E8;
int myValue = 0b1111101000;
All of the above
None of the above

Save

Question 3 (1 point)

Question 3 Unsaved

Which of the following is an invalid Java statement:

Question 3 options:

System.out.println(“Hello, World! “);
int d = 14;
d++;
x + y/100;
None of the above

Save

Question 4 (1 point)

Question 4 Unsaved

Which of the following statements is a comment in Java

Question 4 options:

/ This is a test
public class Hello {
// This is a test. //
(String[] args)
None of the above

Save

Question 5 (1 point)

Question 5 Unsaved

Will the following Java code compile and run?

public class QuizItem  {    public static void main(String[] args)       {           final int age = 38;      System.out.println(“Age is ” + Age);    } }

Question 5 options:

Yes
No

Save

Question 6 (1 point)

Question 6 Unsaved

What is the output from the following Java code?

public class Week1Quiz {

public static void main (String[] args) {

System.out.println (“Welcome”);

System.out.println (“to”);

System.out.print (“UMUC!”);

}

}

Question 6 options:

Welcome to UMUC!
No output as the code will not compile.
Welcome to UMUC
None of the above
WelcometoUMUC

Save

Question 7 (1 point)

Question 7 Unsaved

What character is assigned to the variable myChar in the following line of Java code?

char value = ‘\u0023’;

Question 7 options:

#
y
null
?
X

Save

Question 8 (1 point)

Question 8 Unsaved

Will the following Java code compile and run without errors? public class QuizItem  {    public static void main(String[] args)       {           final int age = 38;      age = 39;       System.out.println(“Age is ” + age);    } }

Question 8 options:

Yes
No

Save

Question 9 (1 point)

Question 9 Unsaved

You are designing a program for users to enter whole numbers that range from -200 to 2147483648. What Java data type will best satisfy this range of numbers?

Question 9 options:

int
long
byte
char
short

Save

Question 10 (1 point)

Question 10 Unsaved

Given the following sequence of Java code: int var = 4; var++; var = var + 2; var–; var = -var;   What is the final value of var?

Question 10 options:

4
-6
8
-9
None of the above

Save

Question 11 (1 point)

Question 11 Unsaved

You are designing a program for users to enter whole numbers that range from -100 to 127. What Java data type will best and most efficiently satisfy this range of numbers?

Question 11 options:

int
char
byte
long
short

Save

Question 12 (1 point)

Question 12 Unsaved

Given the following sequence of Java code: int var1 = 9; int var2 = 12; boolean failure = false; int result = failure ? var1 : var2; What is the value of result after executing the code?

 

Question 12 options:

12
9:12
9
3
0.75

Save

Question 13 (1 point)

Question 13 Unsaved

Select the Java code that will correctly declare a boolean variable named success and assign it a value of false.

Question 13 options:

Boolean success = true;
int success = false;
None of the above
boolean success = 1;
boolean success = 0;

Save

Order now and get 10% discount on all orders above $50 now!!The professional are ready and willing handle your assignment.

ORDER NOW »»