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Java final 06-07

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 1. 
During program development, software requirements specify
a.
how the program will accomplish the task
d.
how to test the program when it is done
b.
what the task is that the program must perform
e.
all of the above
c.
how to divide the task into subtasks
 

 2. 
In which phase of program development would you expect the programmer(s) to determine the classes and objects needed?
a.
Software requirements
d.
Software testing
b.
Software design
e.
Could occur in any of the above
c.
Software implementation
 

 3. 
Which of the following would not be considered an algorithm?
a.
a recipe
d.
a shopping list
b.
a computer program
e.
travel directions
c.
pseudocode
 

 4. 
The idea that program instructions execute in order (linearly) unless otherwise specified through a conditional statement is known as
a.
boolean execution
d.
sequentiality
b.
conditional statements
e.
flow of control
c.
try and catch
 

 5. 
Of the following if statements, which one correctly executes three instructions if the condition is true?
a.
if (x < 0)                  
          a = b * 2;
          y = x;                                  z = a – y;     
c.
if { (x < 0)
       a = b * 2;
      y = x;
      z = a – y ;
}
b.
    {
    if (x < 0)
      a = b * 2;
      y = x;
      z = a – y;
}
d.
if (x < 0)                 
{
a = b * 2;
y = x;
z = a – y;
                    }
 

 6. 
if (a > 0)                                   
            if (b < 0)                             
            x = x + 5;                             
            else
          if (a > 5)                             
                    x = x + 4;
             else
        x = x + 3;
   else
          x = x + 2;

If x is currently 0, a = 5 and b = 5, what will x become after the above statement is executed?
a.
0
d.
4
b.
2
e.
5
c.
3
 

 7. 

Consider the following code that will assign a letter grade of ‘A’, ‘B’, ‘C’, ‘D’, or ‘F’ depending on a student’s test score. 
if(score >= 90) grade = 'A';
if(score >= 80) grade = 'B';
if(score >= 70) grade = 'C';
if(score >= 60) grade = 'D';
            else grade = ‘F’;
a.
This code will work correctly in all cases
c.
This code will work correctly only if grade < 60
b.
This code will work correctly only if grade >= 60
d.
This code will work correctly only if grade < 70
 

 8. 

If x is an int where x = 1, what will x be after the following loop terminates?
while (x < 100)
                                            x *= 2;
a.
2
d.
128
b.
64
e.
this is an infinite loop
c.
100
 

 9. 

If x is an int where x = 0, what will x be after the following loop terminates?
while (x < 100)
        x *= 2;
a.
2
d.
128
b.
64
e.
this is an infinite loop
c.
100
 
 
Use the following class definition to answer questions 1-4.

public class Questions1_4
{
      public static void main(String[ ] args)
      {
              System.out.print("Here");
              System.out.println("There  " + "Everywhere");
              System.out.println("But  not" + "in  Texas");
      }
}
 

 10. 
The program will print the word "Here" and then print
a.
"There  Everywhere" on the line after "Here"
d.
"ThereEverywhere" on the same line as "Here"
b.
"There" on the line after "Here" and "Everywhere" on the line after "There"
e.
"ThereEverywhere" on the line after "Here"
c.
"There  Everywhere" on the same line as "Here"
 

 11. 
The final println command will output
a.
"But  not  in  Texas"
d.
"But  not+in  Texas"
b.
"But  notin  Texas"
e.
"But  not  +  in  Texas"
c.
"But  not" on one line and "in  Texas" on the next line
 

 12. 
How many lines of output are provided by this program?
a.
1
d.
4
b.
2
e.
5
c.
3
 

 13. 
A reasonable comment for this program might be
a.
//  a program that demonstrates the differences between print, println and how + works
d.
// a program that outputs the message ”Here There Everywhere But not in Texas‘
b.
// a program that outputs a message about Texas
e.
// a program that has three output statements in it
c.
// a program that demonstrates nothing at all
 

 14. 
If you want to output the text "hi there", including the quote marks, which of the following could do that?
a.
System.out.println("hi there");
d.
System.out.println("\"hi there\"");
b.
System.out.println(""hi there"");
e.
System.out.println("\"hi there\"");
c.
System.out.println("\"hi there");
 

 15. 
Of the following types, which one cannot store a numeric value?
a.
int
d.
all of these can store numeric values
b.
double
e.
none of these can store numeric values
c.
char
 

 16. 
What value will z have if we execute the following assignment statement?  
a.
z will equal 0.0
d.
z will equal 0.05
b.
z will equal 0.5
e.
z will equal 0.05
c.
z will equal 5.0
 

 17. 
A cast is required in which of the following situations?
a.
using charAt to take an element of a String and store it in a char
d.
storing a double in an int
b.
storing an int in a double
e.
all of the above require casts
c.
storing a double in a double
 

 18. 

What will be the result of the following assignment statement?  Assume b = 5 and c = 10.
int a = b * (-c + 2) / 2;
a.
30
d.
-20
b.
-30
e.
-6
c.
20
 

 19. 
What is output with the statement System.out.println(x+y); if x and y are int values where x=10 and y=5?
a.
15
d.
x+y
b.
105
e.
An error since neither x nor y is a String
c.
10.5
 



 
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