Question 1

Given the following switch statement where x is an int, answer the questions below
switch (x)
{
case 3 : x += 1;
case 4 : x += 2;
case 5 : x += 3;
case 6 : x++;
case 7 : x += 2;
case 8 : x--;
case 9 : x++
}
-If x is currently equal to 5, what will the value of x be after the switch statement executes?

Accepted Answer

A)  8 
B)  6 
C)  11 
D)  5 
E)  10

Question 2

Control in a switch statement jumps to the first matching case.

Accepted Answer

A) True 
 B)False

Question 3

The do loop differs from the while loop in that

Accepted Answer

A)  the while loop will always execute the body of the loop at least once 
B)  the do loop will always execute the body of the loop at least once 
C)  the do loop will continue to loop while condition in the while statement is false and the while loop will continue to loop while the condition in the while statement is True 
D)  the while loop will continue to loop while condition in the while statement is false and the do loop will continue to loop while the condition in the while statement is True 
E)  none of the above, there is absolutely no difference between the two types of loops

Question 4

Given the following code, where x = 0, what is the resulting value of x after the for-loop terminates?
For (int i=0;i<5;i++)
X += i;

Accepted Answer

A)  0 
B)  4 
C)  5 
D)  10 
E)  15

Question 5

How many times will the System.out.println(*); statement execute inside of the following nested for-loops?
for (j=0; j<10; j++)
for (k=10;k>j;k--)
System.out.println("*");

Accepted Answer

The answer of How many times will the System.out.println(*); statement...

Question 6

A switch statement must have a default clause.

Accepted Answer

A) True 
 B)False

Question 7

A dialog box is a device which accepts voice commands.

Accepted Answer

A) True 
 B)False

Question 8

If a switch statement is written that contains no break statements whatsoever,

Accepted Answer

A)  this is a syntax error and an appropriate error message will be generated 
B)  each of the case clauses will be executed every time the switch statement is encountered 
C)  this is equivalent to having the switch statement always take the default clause, if one is present 
D)  this is not an error, but nothing within the switch statement ever will be executed 
E)  none of the above

Question 9

Rewrite the following if-else statement using a conditional operator.
if (x > y) z = x; else z = y;

Accepted Answer

The answer of Rewrite the following if-else statement using a...

Question 10

Consider the following paint method to answer the questions below:
public void paint(Graphics page)
{
int x, y = 200;
page.setColor(Color.blue);
for (x = 100; x < 200; x += 20)
page.fillRect(x, y, 10, y-x);
}
-Which of the following statements are True about Java loops?

Accepted Answer

A)  all three loop statements are functionally equivalent 
B)  while loops and do loops are essentially the same; but while loops always execute at least once 
C)  if you know the number of times that a loop is to be performed, the best loop statement to use is a while loop 
D)  loops may be replaced by an appropriate combination of if-else and switch statements 
E)  none of the above

Question 11

Consider the following paint method to answer the questions below:
public void paint(Graphics page)
{
int x, y = 200;
page.setColor(Color.blue);
for (x = 100; x < 200; x += 20)
page.fillRect(x, y, 10, y-x);
}
-What will the following code do? Assume s is a String, x is an int initialized to 10, page is a Graphics object, and this is part of a paint method for an applet.
Boolean isVowel = false;
String vowels = "aeiou";
For (int j = 0; j < s.length( ); j++)
{
For (int k = 0; k < 5; k++)
If (s.charAt(j) == vowels.charAt(k)) isVowel = True;
If (isVowel) page.drawString(""+s.charAt(j), 10, 15*x++);
Else page.drawString(""+s.charAt(j), 110, 15*x++);
IsVowel = false;
}

Accepted Answer

A)  The String s is printed down the applet in two columns, alternating each letter 
B)  The String s is printed across the applet with vowels printed in one row and all other characters printed in a row above the vowels 
C)  The String s is printed across the applet with vowels printed in one row and all other characters printed in a row below the vowels 
D)  The String s is printed down the applet in two columns with vowels appearing in the left column and all other characters in the right column 
E)  The String s is printed down the applet in two columns with vowels appearing in the right column and all other characters in the left column

Question 12

The following for-loop is an infinite loop.
for (int j = 0; j < 1000; ) i++;

Accepted Answer

A) True 
 B)False

Question 13

Describe a situation where you should use a do loop and a situation where you should use a while loop.

Accepted Answer

The answer of Describe a situation where you should use...

Question 14

Given the following tax table information, write Java code to assign the double taxRate appropriately given the double pay. Select the selection statement (if, if-else, switch) that makes the most sense.
If pay is more than 100,000, tax rate is 40%
If pay is more than 60,000 and less than or equal to 100,000, tax rate is 30%
If pay is more than 30,000 and less than or equal to 60,000, tax rate is 20%
If pay is more than 15,000 and less than or equal to 30,000, tax rate is 10%
If pay is more than 5,000 and less than or equal to 15,000, tax rate is 5%
If pay is less than or equal to 5,000, tax rate is 0%

Accepted Answer

The answer of Given the following tax table information, write...

Question 15

The following loop is syntactically valid.
for (int j = 0; j < 1000; j++) j--;

Accepted Answer

A) True 
 B)False

Question 16

Write a "query-controlled" loop that will continue to input int values from the user, adding each to the int value sum, and then ask if the user has another value to input, until the user says that there are no more values. Assume that cs1.Keyboard has been imported.

Accepted Answer

The answer of Write a "query-controlled" loop that will continue...

Exam 6: More Conditionals and Loops

Control in a switch statement jumps to the first matching case.

The do loop differs from the while loop in that

Given the following code, where x = 0, what is the resulting value of x after the for-loop terminates? For (int i=0;i<5;i++) X += i;

How many times will the System.out.println(); statement execute inside of the following nested for-loops? for (j=0; j<10; j++) for (k=10;k>j;k--) System.out.println("");

A switch statement must have a default clause.

A dialog box is a device which accepts voice commands.

If a switch statement is written that contains no break statements whatsoever,

Rewrite the following if-else statement using a conditional operator. if (x > y) z = x; else z = y;

Consider the following paint method to answer the questions below: public void paint(Graphics page) { int x, y = 200; page.setColor(Color.blue) ; for (x = 100; x < 200; x += 20) page.fillRect(x, y, 10, y-x) ; } -Which of the following statements are True about Java loops?

The following for-loop is an infinite loop. for (int j = 0; j < 1000; ) i++;

Describe a situation where you should use a do loop and a situation where you should use a while loop.

The following loop is syntactically valid. for (int j = 0; j < 1000; j++) j--;

Write a "query-controlled" loop that will continue to input int values from the user, adding each to the int value sum, and then ask if the user has another value to input, until the user says that there are no more values. Assume that cs1.Keyboard has been imported.

Exam 6: More Conditionals and Loops

Control in a switch statement jumps to the first matching case.

The do loop differs from the while loop in that

Given the following code, where x = 0, what is the resulting value of x after the for-loop terminates? For (int i=0;i<5;i++) X += i;

How many times will the System.out.println(*); statement execute inside of the following nested for-loops? for (j=0; j<10; j++) for (k=10;k>j;k--) System.out.println("*");

A switch statement must have a default clause.

A dialog box is a device which accepts voice commands.

If a switch statement is written that contains no break statements whatsoever,

Rewrite the following if-else statement using a conditional operator. if (x > y) z = x; else z = y;

Consider the following paint method to answer the questions below: public void paint(Graphics page) { int x, y = 200; page.setColor(Color.blue) ; for (x = 100; x < 200; x += 20) page.fillRect(x, y, 10, y-x) ; } -Which of the following statements are True about Java loops?

The following for-loop is an infinite loop. for (int j = 0; j < 1000; ) i++;

Describe a situation where you should use a do loop and a situation where you should use a while loop.

The following loop is syntactically valid. for (int j = 0; j < 1000; j++) j--;

Write a "query-controlled" loop that will continue to input int values from the user, adding each to the int value sum, and then ask if the user has another value to input, until the user says that there are no more values. Assume that cs1.Keyboard has been imported.

How many times will the System.out.println(); statement execute inside of the following nested for-loops? for (j=0; j<10; j++) for (k=10;k>j;k--) System.out.println("");